When you're midway through a sexual act and you're about to ejaculate, however, to prolong your sexual stamina you tense your entire body and accidentally sh*t your pants.
Barry: Oh my god I totally ended up having a Northumbrian Spasm last night!
Carl: Ah man! I bet it went everywhere!
Carl: Ah man! I bet it went everywhere!
by ShitForBrains2001 March 27, 2018