The puffy curly hair, usually very untidy, on the back of a hairy
dude's neck. Commonly associated with overweight to
obese men. Typically used as an all-purpose
pillow or 100% effective contraception.
Becky: So what did you think of Ricky?
Katelyn: He's a nice
guy, but he has a huge neck fro!
Becky: Ewww, good thing he doesn't have your number.