look up any word, like bae:
 
1.
1) The process of having sex with a fat chick in the Naval. 2) Drawing out before ejaculation and letting it flow over a chick's belly.
by M.R. March 21, 2003
 
2.
To fuck someones belly button and cum into it.
Me and Stephen fucked alot last night, we even belly fucked
by Ryan McDonalds July 31, 2007