Organ Donor 

A rider (motorcycle) that does not wear a helmet while doing risky riding manuevers.

If that guy doin the stoppie doesnt put on a helmet, he'll be a organ donor.

Organ Donor by thepanthera July 4, 2005

sperm donor

The person that gets a female pregnant but doesn't help her with the child in any way, shape, or form. In some cases they don't acknowledge the child at all.

I saw my sperm donor today. He came by to see my daughter and had the nerve to be empty handed.

sperm donor by Arlene August 27, 2003

sperm donor

My father, the asshat.

I disowned my father so now I call him the "sperm donor".

sperm donor by anon July 29, 2004

organ donor 

One who engages in any risky behavior (i.e. skydiving, motorcycling, etc.) without taking due precations and using proper safety equipment (i.e. a helmet).

Check out the dork on the 4-wheeler going over those ramps at 60, without a helmet!

organ donor by BillG July 20, 2005

boner donor 

Donating ones boner, out of the goodness of their heart, to a needing recipient.

"yo that hoe is so fine..i would totally be her boner donor"

boner donor by SingSing January 29, 2008

Oregon Donor 

Any person from Oregon who has relocated to, and presumably made better, somewhere else.

Bab: Oi! Yous oint from Baaaasten?!

Him: No Bob, I'm not from Boston. I'm an Oregon Donor. I'm hear to save you from yourself.

Bab: OOOI! Whuddya mean ders glass en my Sam Hadams?!?!

Oregon Donor by Hugh Jweener October 12, 2008

Sperm Donor

A Father or a dead beat dad.

My Sperm Donor hadn't spoken to me since i was 5, and now im 25.

Sperm Donor by Jazzy09 June 18, 2009