Any whitish, unknown substance found on the human body
Originally used to define the white cheesy junk on the genitals the morning after sex.
When stuck on a guys schlong when he pees can make the stream go in multiple directions, none of which go into the toilet.
Tom: Whoa! Dude, you have smegma on your lip you fag!
Chris: you trippin' dawg, I just ate some vanilla ice cream.