2 definitions by Bad Placebo

A person who is filled with enthusiasm and ardent zeal for all things related to anal and other forms of ass play.
A real analthusiast will stand by a mailbox waiting for their next shipment of lube.
by Bad Placebo August 3, 2011
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Doing a chick doggie style while a small dog is curled up sleeping on her back.
Paris Hilton and Tinkerbell love getting it from the Underdog Position.
by Bad Placebo October 8, 2008
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