Top definition
The untanned characteristic of men's upper legs from having worn longer shorts and trunks while in the presence of the beneficial rays of the sun. It does not usually occur in women or non-Americans, whose beach attire is usually quite brief.
When he sat down, Joey's shorts revealed a major case of guy-thigh.
by sofacall July 22, 2009
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2
When your thigh is touching someone else's thigh
GOD DAMN IT RICHAD STOP BEING A GUY THIGH
by Jake Roon November 30, 2016
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