when two people are just quietly enjoying a good laugh and a third person comes into the equation displaying their satisfaction with the joke. a joke that just wasn't meant to be for them.
Elton Chigumbura: and then i said alright i'll do it but i'm not going to enjoy it

George Dockrell: that's what your sister said to me last night

Elton Chigumbura:George Dockrell: ahaahhahhahhahahah

Eric Szwarczynski: *walks in quietly wondering what all the commotions about*
AHAHAHHA fuck that's a good one AHAHAHA HOO HOO HHAA
AHAHAHAHAHAHHAH

Elton Chigumbura: *giving eric a dirty look*
George Dockrell: piss off eric go bang ariel, we don't want your third party laugh here.
Elton Chigumbura: haha good one George

George Dockrell: *gives Elton dirty look* what you laughing at kent?
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When you fuck someone who has fucked another person it's like you fucked that other person.
I have so third party fucked Matt Barker!
by cracrjaks August 22, 2011
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an eventful night between two willing individuals with the additional presence/inclusion of a gecko or other reptilian creature
“I’ve been getting bored with our usual Friday nights. Are you interested in trying tonight with a third party gecko?”

Emmy! What a great idea! I was afraid to ask...”
by hotttttyyyy December 1, 2017
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n: What miraculiously occurs when GUY #1 shoots his load into GIRL #1's mouth and she turns around and spits it into the vagina of GIRL #2, which ultimately leads to the knock-up of GIRL #2.
Guy #1: Hell naw, man! Technically, that kid aint mine.

Guy #2: Can you prove it?

Guy #1: Hell yeah, man! I got the third party conception on video!



The proud result of a Third Party Conception, Little Junebug could hold his head up high. For, he had not one, but TWO mommies.
by Harry Hogdick February 16, 2009
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when two people are vibing and the third person automatically vibes with them based on vibes
"i wanna third party vibe with you guys! i love your energy."
by s4gan June 27, 2021
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The act of being repeatedly bumped into by a person being humped. Usually seen in cases in which you and the humpee are sitting down next to each other.
John: Did you see Kyle hump Brenda on that bench today?
David: Actually, he was third party humping me. So yes, I did.
by Scarred Victim of This March 29, 2011
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