The combination of shitting and pissing out of your anus. Often occurs after mexican food and/or a night of heavy drinking
I ate so many damn tacos and drank so much corona last night, that everybody in the office today heard me shizzing on the toilet
by Fat Bastard August 07, 2002
1 more definition
When a male experiences overwhelming nervousness and arousal causing him to void his bowels and ejaculate simultaneously.
When a male (usually a nerd) is attempting to have a conversation with an attractive female and becomes so nervous and aroused that he begins shizzing.
by Nibs McGee April 19, 2011