1 definition by Not So Happy Birthday
When your so excited that it's your birthday that when you go to blow out the candles you shit your pants.
Shane: Ryan had an anal birthday last week
Jordon: How do you know?
Shane: There was choclait frosting in his pants
Jordon: How do you know?
Shane: There was choclait frosting in his pants
by Not So Happy Birthday February 20, 2011