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.
A person who recklessly rides a powerful motorbike, usually a 1000cc Japanese sportbike with illegal pipes. The characteristic behavior includes wheelies, speeding, burnouts etc illegal activity. The moniker "donor" refers to the fact that the rider is eventually very likely going to donate his (still intact) internal organs after a fatal accident.
when ur buddy has a chance with a super hot chick BUT she has a fat or ugly friend that will most definately cock block so u have to take one for the team {also known as wingman}.
Jason:yo I got a chance with that hot chickover there but I know her fat friend is gonna cock block me, so I need ur help.
Ed:let me guess u need my donor boner for the fatty.