Sauce Swap 

The act of swapping stored sauce in the mouth while making out.

Boy- *has Buttermilk ranch stored in his mouth, then proceeds to make out with his girlfriend.

Girl- *has ketchup stored in her mouth, proceeds like make out with her boyfriend

While the two are making out, boy trades his sauce with his girlfriend. Boy now carries ketchup in his mouth while his girlfriend carries buttermilk ranch. This is the act of a sauce swap

The two continue their day and venture on to Costco for the free samples.

Sauce Swap by Savitar Slayer January 10, 2019

swap tartar sauce

To engage in the act of intercourse. Can be used as a humourous pick up line.

"I ended up swapping tartar sauce with Caitie last night, so yeah, it was a good party,"

"Hey babe, wanna go out back & swap tartar sauce?"

swap tartar sauce by Steveh May 28, 2004

swap sauces

To have a sexual lesbian encounter

I would love to see Katie and Camryn Swap Sauces one day

swap sauces by AtomicNarc September 16, 2015

Swapping sauce 

To make out with someone

Yeah dude, last night I was totally swapping sauce with that babe after we went to another room.

Swapping sauce by c0smic September 18, 2013