The eruption smelly gas coming out of the anus. Sometimes it makes a noise sometimes it doesn't. The one that makes a noise is known as a trouser sneeze. You have to be careful not to follow through. See fart, trump and air biscuit.
by Pete September 25, 2004
Ejaculation in one's own pants, literally. Metaphorically used as an expression of ecstatic excitement.
by Gruntie Stevie September 21, 2019