Top definition
A daring sexual act done by two or more rock climbers. As a male climber ascends a top-rope route, he secretly works himself toward climax. Upon reaching the top, the climber gets the belayer’s attention: making eye-contact the climber proceeds to ejaculate on the belayer’s face.

This act should only be attempted by experienced climbers, prepared to down-climb their route as a Yosemite Finish may result in them being abruptly taken off belay. (It is also highly frowned upon at indoor climbing facilities.)
Dude, I had to down-climb my route Saturday after I gave that girl a Yosemite Finish. She doesn’t want to go climbing with us anymore.
by thebigrapose March 08, 2011
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