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a parent that just took part in conception of a child and yet has no contact, part in taking care of or providing for the child what so ever. AKA; deadbeat, low life, scum, pos, loser, worthless, whore, sad, etc.
**My sons donor is a male whore who is also pos.

**Anyone can be a donor it takes someone special to be a daddy!
by froggy17 November 30, 2010
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A member of a fantasy sports keeper league who never wins money at the end of the season due to his sub-par management ability.
You never win anything in this league. You're a freakin donor!
by Woody Williams April 13, 2011
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A donor is a person who likes to drink and smoke pot, or someone who is high and drunk, it is a combination of drunken stoner.
Look at that donor drink vodka when he gets cotton mouth.
by TAB12 December 23, 2009
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