jizzy adjective2 •(slang, vulgar) Covered with ejaculate.I threw my jizzy sheets in the washing machine before my mum could find them. •(slang, vulgar) Resembling or having the qualities of semen.No offense or anything, but this soup tastes a little jizzy. You'd better not have put any special ingredients in here. formsmore jizzy · most jizzy