Top definition
When 3-6 guys do each other up the ass and the person at then end of the "train" makes twoot twwot noises.
DOOD1: Man yesterday those four guys were having a hump train!

DOOD2: SICK !?!

DOD1: I know
by OMG Scottish KID June 09, 2009
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Jun 27 Word of the Day
She thick but you can tell it’s a bbl
by Ynfm June 04, 2019
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