Definitions by Ihatejobsworths

Fiss 

n. 1) urine;
v. 1) to urinate; 2) polite manner of saying 'piss'; 3) abbreviated form of 'fissilate' and 'fissilations'

E.g. "Man, I need a fiss" or "Please excuse me, I need to fissilate"

Fiss by Ihatejobsworths February 22, 2010