Top Definition
the act of motorboat when applied to a man's erect penis and sometimes ball bag
The other day I walked in and Greg was on his knees bonerboating Matt.
by Lil' Queefy December 21, 2008
1 more definition
A term used to describe an extremely attractive woman
That chick is a total boner boat.
by Tha juice is loose June 04, 2011

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