When you ejaculate on to a girl's body.
When you put your sausage into her and jizz comes out of your sausage.
(Noun.) Secret ingredient of a big mac.
Larry: mmmmMMMMM this some good ass jizz inside this here sandwich.
You
You are jizz. You are what happens when you keep jizz in a jar for 20 years
something that your mom was swallowing last night
Bob: there was jizz on my moms bed last night. what the hell did you do?