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1.
A person with a large posterior
Oh my god have you seen how big Jenny's but is? She is a hippobottomass!!
by affleck April 29, 2009
4 0
 
2.
A large butt resembling that of a hippopotatumas
I could sit a glass on that great big hippobottomass
by munty3000 May 15, 2013
1 0