3rd wheel 

a person awkardly there in a situation with a couple.

sarah and joe were fooling around behind the building and maggie was with them. she was so awkward, being the 3rd wheel.

laura: were you the 3rd wheel?
maggie: yeah i hate it. i always get stuck with that when they are being so couple-y.

3rd wheel by used and thrown away December 5, 2009

3rd wheel 

an extra person in a social venue, especially one tha interferes or gets in the way

Go away! We don't want a 3rd wheel with us.

3rd wheel by The Return of Light Joker October 19, 2009

3rd wheeling

where you hang out with a girl and boy in a relationship who otoaly ignore you and are all over themselfs, left out and nobody to talk to.

Person: can i hang with you?
Couple: yeah sure.
(sit together with backs to single persons face.)
Person: never mind actually, i dont like 3rd wheeling.

3rd wheeling by bigbm November 12, 2013

Convo 3rd wheeling 

When two people are having a conversation and you don't really contribute anything, you just kind of feed off of it. Sometimes even through eavesdropping.

Guy 1: Did you see the new marvel movie?
Guy 2: Yeah that was pretty sick!
3rd wheel: Hey me too!

Guy 1 and guy 2: -_- dude stop convo 3rd wheeling

Convo 3rd wheeling by Karab okama August 11, 2019

3rd wheeling

The soul purpose of trying to steal the boy while making the girlfriend mad at all times

isaac is 3rd wheeling and trying to steal andrew to piss alexis off

3rd wheeling by brodskoo December 28, 2023

3rd and 4th Wheeling 

Similar to 3rd wheeling but the only reason you don't have date of your own is that you're a fat ass thus counting as two people.

Boyfriend (To Girlfriend): Why is that fat girl following us around all the time?

Girlfriend (To Boyfriend): I'm sorry she's 3rd and 4th Wheeling but I felt bad that she was alone.

3rd and 4th Wheeling by Ike Nwamgbe October 22, 2011