When you laugh to hard on IM (Instant Messenger) to a friend you can't type properly and input random shit to emphasise your amusement.
xxxxxx says (7:24 PM):
The act of letting out some urine when letting a huge fart
"YO MAN i THiNK i JUSS PiSS FARTED!"
Davewtfadsfljkncunt says (7:24 PM):