Definitions by TB James

knobtip 

Bell end
A knobtip is the edge of a man's cock which his man fog will fizz out of when he finishes

Big dawg : yo son, that bitch do you good last night?

lil dawg : yeah nigga, that slut done had her tongue all over my knobtip

big dawg : good suckin bro

knobtip by TB James October 3, 2008