Something you say to a person , to which you are speaking. It means your mother has fat thighs and vagina, therefore everything it that vicinity gets squished together. Creating a vagina/thigh area that looks like an onion would if you cut out a small slice from one side.
Good example: Your mother's onion was a nice ride last night.
Bad example: Your mother used her onion to make fajitas last night.
Bad example: Your mother used her onion to make fajitas last night.
by Thislethorne November 27, 2010