purple onion 

the female equivalent to blue balls (i.e. unfulfilled sexual pleasure from or after being sexually teased).

That hot guy gave me such a purple onion when he bent over.

purple onion by Andy7 August 20, 2007

Purple Onion 

When you punch a girl so hard in the vagina that it turns purple and she cries.

That ugly bitch tried to rape me so I gave her a purple onion.

Purple Onion by mitsukosouma July 6, 2011

Purple onion 

A vagina of African descent.

Jake: "hey man, I finally had sex with a black girl"
Chad: "so you finally got some purple onion?"
Jake: "what?"
Chad: "yea, man didnt you look down while you were getting it in?"

Purple onion by The real professor plum July 8, 2023