1 definition by mr bo

Top Definition
the act of lying in a bath with a perspex sheet covering the top, while assailants defecate onto the transparent surface rubbing the foeces around with bare buttocks.
dude, fancy hitting your grandma's house for a water boatman this saturday?
#water #boatman #boat-man #waterboatman #waterboatm'n
by mr bo November 09, 2008
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