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.

The annoying friend in the group that will do anything to make sure everyone likes them. Usually supplies the rest of the group with cigarettes/booze and tells really corney jokes. No one REALLY likes this person, but everyone tollerates them because they are such a pathetic kiss ass.