1.When a man has hair from his chest leading to his penis that exceeds the "Happy Trail" follicle quota.

2.When a happy trail looks wide enought that you can drive a car on it, that is a happy hike.
i was going to go down on this one guy but when he took off his shirt i noticed he had a happy hike instead of a happy trail
by slackeylackey01 February 07, 2011
Top Definition
A proposition made to a person to give you head.

Stems from the person following your happy trail.
"Hey Babe, you wanna work out - why don't you take a happy hike?"
by SiriousLeeEva April 01, 2012
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