A person you invite on a date not because they like you but, because if you don't they'll be the Third Wheel. After this date they'll most likely never talk to you again and push you to the side.
Henry:Yeah I finally am going out on a date with Jamie.

Andy:Dude, I wouldn't be so happy the only reason she's doing this is because she doesn't want to be the Third Wheel.

Henry: So I'm just a..

Andy: Yep sorry dude your just a Spare Wheel.
by Theblackness December 28, 2010
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When you have that extra bit hanging over your belt....another word for muffin top.
Marie: I like them jeans on her.

Emma: eww no look at the spare tyre hanging over the top in all its mushy greatness.

Marie: yeah you're right they'd look so much better on me hohoho!
by The Hippy Hippy shake October 25, 2007
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:)

What you say when you don't want someone around. Namely the Cedric Diggory(ies, s?) of the world. Found in Harry Potter and the goblet of fire.
and more importantly, in the internet cult favorite musical, A Very Potter musical.
Harry/Darren: 'Cedric, seriosuly, screw off. You're just this spare guy who noone wants around. You're such a spare! "
Quirrel/Voldemort/Brian/Joe : KILL THE SPARE! AVADA KEDAVERA!
by InomRedVines August 28, 2010
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(n) an extra vagina, or an extra supply of vaginas
Hey bro, you got any spare coochie? I need to fix my fridge.
by bakedcandle October 19, 2018
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the flab around the stomach that can stick out over a women's jeans. obtained by overeating, not excercising enough, or drinking too much beer.

HOWEVER... can be kindof cute on the right woman
small spare tires are sexy, whereas BIG-RIG truck tires aren't
by Cowboyssuck July 2, 2010
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it is said when one person in a conversation sets them self up for a massive joke and another person in the conversation spares their humiliation.
dude1: yo, im really in the mood for some hot dogs
dude2: oh man i could have got you so bad but i'll give you a spare card this time.
by ABS-OF-STEEL April 22, 2009
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