Mockdive 

Vaginal penetration by use of one's head, which is usually shaved or bald to minimize friction and to make for a cleaner entrance.

Give Mr. Clean a bottle of KY, and that nigger can mockdive any bitch.

Mockdive by Gershim June 21, 2009

muckdive 

the opposite of a blumpkin..when a guy goes down on a chick while she is taking a dump.

holy shit, going down..... can i actually do this muckdive? get the air freshner..before i vomit.

muckdive by poppie tart December 3, 2009