First, the backstory. Captain America became a superhero when he was given a supersoldier serum by the army. He was immediately endowed with superhuman strength and endurance.

Now the definition:

When someone is incredibly muscular that regular steroids could not have acheived such muscle size. Therefore, the person must be on the same pills that Captain America takes.
"Holy shit have you seen jason's calves? the kid must be on captain america pills."

"i hate working out unlike captain america over there"

Kid 1- "he's so jacked if he makes a muscle it'll hit him in the eye"
Kid 2 "thats what the captain america pills'll do to ya"
by jesus o'nazareth March 4, 2010
Get the Captain America Pills mug.
Phrase.
A verbal retaliation to an unnecessarily defensive outburst or physically defensive or evasive reaction. It is reference to the Marvel Comic Book character Captain America who uses a large round shield to defend himself from attacking foes.
"Shield Down, Captain America!" said Louis to Joe for ranting about how "everyone" was against his ideas "all the time."

When Toby winced and ducked at the cold beer Lyle tossed him, Ralph roared, "Shield Down, Captain America!"
by SAMMER of the GOODS April 28, 2009
Get the Shield Down, Captain America! mug.
The best Marvel movie ever created starring : Steve Rogers (Capt 'Merica), Tony Stank (Iron Man), Black Panther (Best Superhero besides Cap), and a bunch of other heroes no one remembers
That move, Captain America : Civil War, was the best movie of all time, I ate a whole bucket of popcorn.
by FaZe Brad #360noscope May 16, 2016
Get the Captain America : Civil War mug.
A deadpan, snarky response to an unbelievable series of events that is related to you by a friend or co-worker. Taken from the classic Lee/Kirby issue of THE AVENGERS where Captain America is found in the Arctic, having been frozen in a block of ice since the end of World War II.

After he is thawed out, Cap relates the following tale: "By some fantastic stroke of fate, I must have been frozen in an ice flow, and then found by some eskimos who thought I was a supernatural object. Then, all those years, being in a state of frozen suspended animation must've prevented me from aging."

The rational response to all that malarky? "We believe you, Captain America."
Frantic Guy: I'm sorry I'm late! I was riding my bike here & nearly got hit by a plane making an emergency landing! I freaked out & slammed into a fire hydrant, flying over the handlebars and right into the arms a visiting Sumo Wrestler!

You: We believe you, Captain America.
by Wesley2006 January 24, 2008
Get the We Believe You, Captain America mug.
Captain America: The Winter Soldier is a 2014 American superhero film featuring the Marvel Comics character Captain America, produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures. It is the sequel to 2011's Captain America: The First Avenger and the ninth installment in the Marvel Cinematic Universe (MCU). The film was directed by Anthony and Joe Russo, with a screenplay by Christopher Markus and Stephen McFeely, who had also worked in The First Avenger. It stars Chris Evans as Captain America, leading an ensemble cast that includes Scarlett Johansson, Sebastian Stan, Anthony Mackie, Cobie Smulders, Frank Grillo, Emily VanCamp, Hayley Atwell, Robert Redford, and Samuel L. Jackson. In Captain America: The Winter Soldier, Captain America, Black Widow, and Falcon join forces to uncover a conspiracy within S.H.I.E.L.D. while facing a mysterious assassin known as the Winter Soldier.
Captain America: The Winter Soldier (2014)
1. The Winter Soldier (Bucky Barnes) is able to match Captain America (Steve Rogers) move by move, even to the point of catching Rogers' shield. This foreshadows Barnes taking over as Captain America (which happened in the comics).

2. Jasper Sitwell mentions some high-risk targets that HYDRA is keeping tabs on. Among these are Bruce Banner (The Hulk), Dr. Stephen Strange, and "a man in Cairo". The latter is most likely Marc Spector/Moon Knight, an Avengers team member who hasn't made it into the movies yet.

3. UFC Welterweight champion Georges St-Pierre plays a French mercenary in the film. For the filmmakers, landing the popular MMA fighter for the role was a stroke of luck and good timing but is was equally a stroke of luck for Georges St-Pierre who was excited to get his first chance at being in a big action movie.

4. Sebastian Stan is contracted for nine films but according to him, when production for this film began he was not told of anything of which films he will be incorporated. Stan only realized he was playing the title role of Winter Soldier when the title was formally revealed in San Diego Comic Con 2013.

5. Aaron Taylor-Johnson and Elizabeth Olsen appear as Quicksilver and The Scarlet Witch in an extra scene during the end credits, which sets the stage for Avengers: Age of Ultron (2015).
by The Centurion December 6, 2014
Get the Captain America: The Winter Soldier (2014) mug.
Captain America: The First Avenger is a 2011 American superhero film based on the Marvel Comics character Captain America. It is the fifth installment of the Marvel Cinematic Universe. The film was directed by Joe Johnston, written by Christopher Markus and Stephen McFeely, and stars Chris Evans, Tommy Lee Jones, Hugo Weaving, Hayley Atwell, Sebastian Stan, Dominic Cooper, Neal McDonough, Derek Luke, and Stanley Tucci. It was distributed by Paramount Pictures. Predominantly set during World War II, the film tells the story of Steve Rogers, a sickly man from Brooklyn who is transformed into super-soldier Captain America to aid in the war effort. Rogers must stop the Red Skull – Adolf Hitler's ruthless head of weaponry, and the leader of an organization that intends to use a device called a "Tesseract" as an energy-source for world domination.
Captain America: The First Avenger (2011)
(a body is discovered in the Arctic)
Search Team Leader: Get me the Colonel! I don't care what time it is! This one's waited long enough...

(Schmidt admires a wooden Norse carving)
Johann Schmidt: Yggdrasil. Tree of the world. Guardian of wisdom. And fate, also.
(discovers a wooden drawer, uncovers the Tesseract)
Johann Schmidt: And the Führer digs for trinkets in the desert.

Gabe Jones: Who are you supposed to be?
Steve Rogers: I'm... Captain America.
(Steve walks off to free the soldiers trapped below)
James Montgomery Falsworth: I beg your pardon?

Timothy 'Dum Dum' Dugan: Are you sure you know what you're doing?
Steve Rogers: Yeah. I punched out Adolf Hitler 200 times.

(last lines)
(Steve Rogers finds himself in New York)
Nick Fury: At ease, soldier! Look, I'm sorry about that little show back there, but we thought it best to break it to you slowly.
Steve Rogers: Break what?
Nick Fury: You've been asleep, Cap. For almost 70 years.
(Steve is silent with shock)
Nick Fury: Are you going to be okay?
Steve Rogers: Yeah. Yeah, I just... I had a date.

(After end credits)
Nick Fury: (finding Steve in a gym) Trouble sleeping?
Steve Rogers: You're here with the mission, sir?
Nick Fury: I am.
Steve Rogers: Trying to get me back in the world?
Nick Fury: Trying to save it.
by The Centurion July 4, 2012
Get the Captain America: The First Avenger (2011) mug.
A lesser known super hero of Latino heritage. He dresses in a red flannel with the top button as the only one buttoned. Under that a white tank top. He has a crime fighting dog called essay. He has special abilities to avoid almost all governmental detection. Climbs over any wall, has the set up sonic blast. A 1974 black pimped out El Camino is his ride. Seen mostly at nights.
Dude...what happened to Jon...I don't know it must have been Captain Central America.
by Jade Canyon August 10, 2018
Get the Captain Central America mug.