when a person has to fart and pee at the same time.
Holy Shit, i hav yo Fis so dam bad.
Means to Fart In Self. When you're in a situation, like with a new boytoy (or fish) and you have to fart so bad that it goes up into your stomach making a loud rumbling, grumbling, farting sound. To which you say "hmmm I must be hungry" in a sad attempt to cover up.
Claire - Oh man, I was at Rusty's this morning, and my gas was so bad that I was Fissing like crazy!
Ann - Dude you should have just broken the ice and dutch ovened him
Fis - the slang for when seeing someone hot or with a nice body
Aqsa's looking fis today !
Fucking Ididot Slut
the name you call a person who makes bad decisions and sleeps with a lot of people
a FIS is usually female
a FIS usually is a person who is or at one point was your friend
a FIS is a person including but not limited to:
-a 'friend' who has sex in front of you
-a 'friend' who has sex with the person who are fond of
-a 'friend' who makes fun of you for not having sex all the time
-a person who smokes TOO MUCH POT, smoking pot does not make them a fis but if it becomes ALL they talk about and do, then they just may be an FIS
1: "OH MY GOD, we were hanging out with that boy i like and she just fucked him, right in front of me!!!"
2: "what a FIS"