mayo jar 

A communal jar that is passed around and filled with fresh semen whilst chatting.

"Hey Senoir, pass the mayo jar"

mayo jar by SomeTosser July 14, 2014

Stirring the mayo jar 

A term for female masturbation, characterized by the noise made while stirring a jar of mayonnaise.

She just finished stirring the mayo jar. Hopefully she didn't get any in her pants.

Stirring the mayo jar by Elysian893 November 24, 2010