The Third Wheel 

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.

The Third Wheel by Eric Ha January 20, 2022

The Third Wheel Test 

A test to see if a guy and a girl are more than just friends. You hang out with them, and if you feel like a third wheel, there is something more going on.

-"Are John and Ashley dating?"
-"They claim to be 'just friends,' but I ran the third wheel test and it came out positive"

The Third Wheel Test by #3'd May 25, 2010

the third wheel code

Only one rule to being the third wheel and it must be followed to a dime.
1.) You dont speak, unless you have something funny to say. After saying it laugh and then go back to silence
Also: walk ahead, behinde or off to the side never with the couple
Congrats you lonley loser you now know how the tird wheel code works

That was awkward-dude 1
Well next time follow the third wheel code, bro

the third wheel code by foreveracatlady May 3, 2013

rubber wheel on the third rail 

1. Totally clueless. 2. Willfully and proudly ignorant. 3. Out of touch with reality.

"His entire life, especially in public office, with a record of bad decisions, inability to form coherent unscripted sentences, coupled with that self-satisfied smirk, all prove he's usung a rubber wheel on the third rail."

rubber wheel on the third rail by glazeonglass May 25, 2008