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Third wheel

Depending on the situation there's tons of ways to define what a third wheel is! A third wheel typically is person that tags along with two others, usually they are ignored or unwanted. This also can be defined as a person that serves no purpose or has no use in a situation.
She keeps tagging along on our adventures. She's just a third wheel.

We're doing all the work, why does she get to sit around and be a third wheel?
by Elijahvvx August 14, 2022
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third wheeling

If you are searching this up, you are definitely third wheeling or you're around 8-10 and someone told u to third wheel (or someone told u ur third wheeling) anyways. It means when you have to hangout with a couple and you're all alone...watching the couple..kissing, hugging, whispering, laughing..cuddling..anyways! yes. that's basically it! Don't third wheel!
*hanging with a couple*
*you: "i'm so lonely..all i see is two people kissing..hugging..whispering..laughing..cuddling. Why can't I have those?!"
*someone else: "imagine third wheeling ahaha"

get someone, do not do third wheel. It is not fun.
by funnyluv:-) August 26, 2022
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The Third Imput

Bruce DeGay Loves the Third Imput Sailor!
by Your Mom' s Twat September 13, 2022
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Third Pillow

Used to describe someone with a soft body that their partner likes to hug.
"Nuzzling up to them in the morning felt like I was laying on a third pillow."
by CamelManGuy January 14, 2026
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Third Continental Congress

An informal, citizen-led term used by some organizers to describe a voluntary movement advocating for direct democracy in the United States, particularly referencing the 23 states with active ballot initiative or referendum processes; inspired by the historic Continental Congress and used symbolically to encourage broader civic participation. Not an official government body and holds no legal or legislative authority.
During the historic 250th anniversary of the United States, 23 states allow direct democracy through citizen-initiated ballot measures, and some scholars and activists may refer to this coalition as a modern ‘Third Continental Congress’—a symbolic term for a citizen-led movement calling on other states to join.
by Civic Congress January 24, 2026
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Third Leg Roadie

The act of jizzing in your pants on a roadtrip and letting it crust until the next rest stop or end of destination
Ted: Yo man I heard Mikey hit a third leg roadie.
Steve: Aw yeah he told me he couldn’t wait til the next gas station!
by waffleironsuicide January 28, 2026
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