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1 definition by Ill-khan

1) The dude with whom you share a poon in a MMF threesome.

2) A female roomie that while not involved with you, still helps you out with more than the dishes & laundry.
1) I was totally poomies with (insert name) last night after that party and now I can't look him in the eye.

2) My cute poomie took pity on my blue balls last night and sucked me off after dinner.
by Ill-khan October 11, 2009