In porn when there are 2 girls and a guy but one girl only participates only orally, and usually sparingly, if at all.
I was watching a video called AllAnal last night and even though it had Mischa in it, she was the third wheel and didn't do anal at all. She just gave the guy some head and sometimes licked the other girl.
by Eric Ha January 20, 2022
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The act of being a third wheel with a couple, and the couple gets into an argument in front of you and you are left feeling weird.
Friend #1: I went out with Jimmy and Sarah last night
Friend #2: Oh Cool! How was it.
Friend #1: Dude they fought all night.
Friend #2: that sucks
Friend #1: I know dude i had third feels all night
by bigspence October 5, 2018
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You penis that is used to smell things. I don’t know where the second one is.
*fwop* “mhh smells like good pizza”

“How could you tell?”
“I used my third nose
by 3rdnosecreator May 15, 2018
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