Steagle

Something unique and short-lived.

Etymology: The word comes from the Steagles team in the National Football League, which played for one season during World War Two.

In 1943, the Philadelphia Eagles and the Pittsburgh Steelers combined teams due because of an NFL contraction to eight teams caused by a lack of quality players due to armed services obligations. The consolidated team was officially called the Philadelphia-Pittsburgh Eagles-Steelers, but fans and sportswriters eschewed the awkward, run-on official name and dubbed the new fused team "The Steagles".

The Steagles played four games at Philadelphia's Shibe Park and two games at Pittsburgh's Forbes Field, going 5-4-1, the first winning record in the history of pro football in Philadelphia. In 1944, the Eagles went back to being their own team, while the Steelers merged with the Chicago Cardinals (converting back to singular status in 1945).

Thus, a "Steagle" is a one-year phenomenon, a unique, exciting event. It also symolizes something less than ideal that seemingly has become better through its idealization over time.

"Irvin Faust's novel 'The Steagle' (NY: Random House, 1966) is about an alienated English literature professor, a Walter Mitty-type who daydreams about war, old movies and professional sports. 'The Steagle,' which was made into an unsuccessful 1971 movie starring the nebbish Richard Benjamin, is about someone stuck in an idealized past."

Steagle by Chance Wayne May 4, 2006

Sweagle 

The sweat mark left on a toilet seat after a sweaty ass sits on it, which takes the shape of an Eagle. (Sw)eaty + (eagle) = Sweagle

Jim left a nasty sweagle on Tom's toilet seat after the football game last Sunday.

Sweagle by Axemonkey July 22, 2013

Friend Stealer 

A total bitch who comes along hogging your best friend and is really annoying. Your friend likes them but you despise of them. They act like they are all innocent but you know that they are evil deep down.

"Wtf why are they together"
"She's a friend stealer"

Friend Stealer by Honkyfoo May 5, 2016

waifu stealer 

When a fictional character enters an officially recognized relationship with your waifu, thus making her unavailable, he (or she) becomes a waifu stealer. Usually, the character is described by fans as a horrible, mean person or even a womanizer, even if the character hasn't shown any signs of being that way.

The term first came to real prominence in the brony community after the first My Little Pony movie was released. In it, Flash Sentry, an incidental character horns in on Twilight Sparkle, a main character, thus pissing off any of the bronies who called her waifu.

Sometimes also referred to as "waifu thief".

Sakura was so perfect until that waifu stealer got to her

waifu stealer by CanisMinor December 1, 2014

stealerhead 

A derogatory name for someone who has just stolen your boyfriend. Screamed at the top of one's lungs towards the boyfriend stealer. Occasionally accompanied by over the top gesturing with one's hand and hysterical jumping up and down on the spot.

E: "How dare you take my boyfriend, you stealerhead!"

stealerhead by mrs ellie kelly January 26, 2009

Meme Stealer

One who steals memes, a crime against the human race, punishable by death. These people have no life or original humor and thrive off of stealing or reusing others' memes. They are generally retarded and single because they were born as internet criminals

"The city will be having a public execution of the 12 meme stealers that were caught this weekend."

Meme Stealer by The anti-scrub September 11, 2016

man stealer

Someone who goes and date your boyfriend while you are still dating him.

Emily is a man stealer because she took Johnny as her boyfriend.

man stealer by duhma June 3, 2008