Yeah dude, last night I was totally swapping sauce with that babe after we went to another room.
by c0smic September 18, 2013
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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?"
by Steveh May 28, 2004
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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.
by Savitar Slayer January 10, 2019
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