Definitions by Fooshmow

Stretchgasm 

Commonly known as the moment of intense pleasure, either seated or standing, resulting from someone who has been motionless for an extended period of time finally stretches all of his or her muscles simultaneously, resulting in an inadvertently loud sigh of relief or other abnormal vocalization.

Guy: *stretches and makes obnoxious noise*
Girl: "What was that?"
Guy: "We've been sitting here so long I just had a stretchgasm"

Stretchgasm by Fooshmow August 16, 2016