Yosemite or Yos for short can be used as a synonym for yes, yea, yeah, ye, ya, ye and many more by other's 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.)

N. When you eat spicey food before coitus and then rub your burning asshole over her chest while shouting yee-haw and miming pistol shots above your head.

the act of giving someone a mustash wiping menstral blood on the upper lip of the other person. This can be done to a man or a woman but is typically done to a man, by a woman, as a form of revenge, after she has been on the receiving end of a dirty sanchez.

More badass than a regular squirrel, a Yosemite squirrel is the Alex Honnold of the squirrel kingdom. It climbs mountains, drinks beer, and snatches food out of unsuspecting hands.

Sexual act when the guy fucks a girl on her rag then rubs his bloody dick across her upper lip giving her a large red "Yosemite Sam" style mustache. This Action should also make her "Rootin Tootin Shootin Angry"

A genderbended version of Yosemite Sam.