When your giving your girl doggie while having your mate wanking secretly in the background and, right before you are about to cum, your mate takes over and spunks in your girlfriend's face

Tony: Oh dude, I had the greatest night of all time with Ethan
Oliver: What did you guys do?

Tony: Ethan and I performed a cumswitch with my girl. It was so funny
Oliver: That is so cool. Can I do it with you sometime as well?
Tony: Mate, you're a tranny. Don't you remember?
Oliver: shit yea

cumswitch by BigWanker03 May 1, 2019

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CIMWS

Cum in mouth with swallow is a service some prostitutes offer as extra to the more common CIM (Cum in mouth).

Julie offered cum in mouth fas part of her standard service. But for an additional $50 she gave me her CIMWS. I made sure I fed her every last drop of my protein.

CIMWS by de-pube September 2, 2021

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cumswap offspring

A son or daughter procreated by a man skeeting into a girls mouth and said girl spits into another girls spread vagina lips.

male: Dayum girl i didnt know you were pregnant?

female: Yeah it's a cumswap offspring.

male: oh.....

female: yeah.

cumswap offspring by ogmudbone69 October 17, 2010

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cumswap

the act of a man ejaculating in one womans mouth and then right after, the women who's mouth possesses the cum drains the sperm out of her mouth into another womans mouth.

I came in her mouth then she cumswapped it into her friends mouth

cumswap by bigdick dan August 3, 2007

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Shuffle