Spare Wheel

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.

Spare Tyre

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!

Kill the spare!

:)

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!

spare ribs

It doesn't matter what it is, you can't touch them.

You can't touch the spare ribs!!!

spare coochie

(n) an extra vagina, or an extra supply of vaginas

Hey bro, you got any spare coochie? I need to fix my fridge.

spare tire

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

spare cigarette

That cigarette in the pack that should have spare written on it so you know to give it out when hobos, junkies and underage kids come asking you for a cigarette.

When you are out in public enjoying a cigarette, than a random junkie comes up to you "Hey bro mind if I grab a spare cigarette off ya!"