Top Definition
A man that will sleep with any woman.

A man or woman that will "shack up" with anything that moves.
Man, that dude's a shackapopolus, he would sleep with his own sister.

This place is crawling with shackapopoluses, let's get out of here.

Errol Flynn was a great example of a shackapopolus.

Don't get too close to Tina, she's a real shackapopolus.
by s6 June 27, 2005

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