Folding Onion
When a guy puts his dick in an onion while it is flaccid and slowly gets hard, breaking the onion in preparation for sex. This leaves the woman's cooch smelling like an onion. If you would like, you may grill the broken onion and force her to eat it.
"How was sex last night?"
"Good. I spiced it up."
"How?"
"I did the folding onion."
"Good. I spiced it up."
"How?"
"I did the folding onion."