gym flies 

Those little black spots that float around in your peripheral vision, usually seen when you're kicking a$$ at the gym and you start to hallucinate slightly.

"Man oh man, I was on my 300th crunch and I started getting gym flies, big time! I had to stop and rest a while..."

gym flies by MisterSobul April 20, 2007

Some Fires 

Some Weed That Is Way Above Average.

Damn Dat Dude Right There Got Some Fires For The Cheap.

Some Fires by Fail. March 30, 2009

fiesta 

when a man and a woman have sex, then the man cums all over the woman

The girl was covered in cum after the fiesta

fiesta by titus March 23, 2004

firesides 

when a male and female have intercourse on or near the end of the female's period, the residual blood gathers on the sides of the penile shaft, resulting in a red aestheic.

I didn't want to fuck Abby on her period, but she was so damn horny and now I've got firesides!

firesides by junkiesfan January 3, 2007

FireSocket 

A ginger girls hairy vagina.

Yeah, i hear that girl has a FireSocket!

How do you know she is ginger? Her hair is brown? Because she had a FireSocket!

FireSocket by MitchSmith November 16, 2010

Fiestanista 

Fiesta - nista. A person who goes to festivals.

Jack: "Who is that?"
Jill: "That is Billy. He's a fiestanista. He just got back from Bannaroo and is making plans to hit Burning Man."

or

"Let's get out of this bar. Too many fiestanistas. Next thing you know, everyone is going to break out the jembes"

or

"I'm going to meet some other fiestanistas down in Austin for SxSW."

Fiestanista by tucantra November 8, 2011

Fiesta Ninja

The act of sneaking food so that no one notices you.

Jason: At Michaels party I was a fiesta ninja because i was on a diet and i wanted no one to notice me take all those burritos.

Example 2: At night when my parents are sleeping i have to be a fiesta ninja or they catch me taking the twinkies!

Fiesta Ninja by dorkwithpork March 14, 2014