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1.
An extension of the Third wheel. A person who is in a room full of people who are either occupied by, or attained to the opposite sex. Usually tagged along as a "Spare tire," while couples or touchy friends cuddle during a movie, gala, event.
"One night we were together, I just sat there, it was like a spare tire date."
by Mrfantastic September 14, 2013
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