When one person inserts his/her face between the butt cheeks of another person and vigorously shakes their head from side to side. Like motor boating, but in the ass.
by Wally The Wonder Lama May 02, 2011
I got drunk and spent the night swamp boating girls asses. Now my face smells like ass and is covered in what I am hoping is chocolate.
by The REAL Screg May 21, 2010