Spare Tire 

Similar to a third wheel, but instead of one couple and a single person, there are two couples and a single person. The name comes from the fifth wheel in a car, or the spare tire.

It was supposed to be a double date, but Tim decided to show up, thus making himself a spare tire.

Spare Tire by sven_meister January 1, 2011

spare tire 

the girl you are talking to for no other reason than in case all your other ho-contacts suddenly turn cold on you. the spare tire in this case would be installed and ready to satisfy your sexual desires

Greg: Man, why you talkin' to Juanita? She's fuckin nasty!
Harold: She's my spare tire, you know, just in case...

spare tire by OPPuknoMe May 16, 2007

spare tire 

The "ring" of fat wrapping around the mid-section, caused by lack of self-respect and being abused as a child. -used to roll oneself down hills when tired.

Hey you there, I just got a flat, can I borrow that spare tire on your waist?

spare tire by chud master October 4, 2008

Spare Tire 

A woman that you use when your old one is getting repaired or you are waiting for a new one.

Him: so i thought you and christyna were together
Me: nah man she was a spare tire.

Spare Tire by togbp May 24, 2011

Spare Tire 

The fifth person on a double date. Similar to the third wheel.

John was a spare tire on our date last night. It got especially awkward when he started taking pictures of us.

Spare Tire by GingerMarie January 2, 2009

Spare tire 

When your with two other couples or people hooking up. A more sever case of third wheel

"Hey man i head jackie and kevin, jessica and tyler were hooking up while you were there at the movies?"

Yeah dude, felt like succh a spare tire.."

Spare tire by DragonAF February 23, 2011

spare tire 

blunt roach or joint roach

shit man i smoked most my weed all i have left is this spare tire...wanna change it? hellz yea hippy

spare tire by hippy412 March 28, 2008