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Whenever a group of 5 people, wherein 4 of them paired up (as two couples or two people going for sex) and the fifth person is fifth wheeling. No longer shall they be called a fifth wheel rather a donut.
Joe: Hey man did you see the group walking over there?
Bob: yeah what about them?
Joe: the dude in the back is definitely the donut on a car tonight .
Bob: lmao.
by Jewish yeti February 25, 2018
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