A variation of the motorboating of the breasts. This involvles sticking ones face and mouth into anothers butthole and doing the motorboat maneuver.
Last night she wanted me to motorboat her, but I told her let's do something more adventurous. Sit on my face baby, we're gonna swampboat.
by jdizzleut January 07, 2011
by Smugs McBenzie August 14, 2008