(n.) A beautifully endowed buttocks. Distinguishable by either it's size, shape, texture, bounce, or proportion. A donkey may only be considered solid if the observer (given the opportunity) would undoubtedly choose to salt it. (see 'Salted Donkey')
"That is one Solid Donkey"
by TheDonkeyMaster March 30, 2010
by Fish Stix March 29, 2010