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A past association with a subset of women who took part in an activity or series of activities resulting in a more than average attractive woman. Typically referring to athletic or toned figures.

Named after soccer girls because that was the first example given for this association.
Ethan: I think that Jessica is attractive.

Jay: She played sports in college and was varsity.

Scott: That makes sense then that she is attractive due to the Soccer Girl Theory.
by megapixel2000 March 29, 2009
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