1 definition by Mark Dizzle
An Onion Booty is an ass so beautiful it will literally put tears to your eyes. (like an onion)(now go cut that ;-)
i saw her, thick as a champ in all the right places. I knew she had an Onion Booty just by the shape of her thighs. She walked by i waited about a second and a half to look back and 5 seconds after i looked, it hit me... That Onion Booty but tears to my eyes.
by Mark Dizzle March 16, 2010