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1.
Hanging out with your friends in a bathtub.
We were going bathtubbin' last night.
by Haruka Hoshino December 04, 2009
 
2.
V. Getting with a friend on the swing and swinging your head back and putting your feet up, wrapping them around the chains and hanging. Usually includes laughing.
TBaww and Hacob laughed at the girl laying on the ground after she attempted to copy them while they were bathtubbin'
by Hacob SPeni February 06, 2007