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1.
This occurs when friends get together to enjoy some drinking, smoking, reggae music, and good times.
The other night was rad. You could say it was rootsy.
by Rob R. December 01, 2006
 
2.
Rootsy is a term used for masturbating. It is usually performed in front of the general public and/or friends and family. The louder and longer the masturbation is, the better the Rootsy.

A Rootsy is preferrably performed in front of men.

Man A: This game is boring, what do you wanna do?"

Man B: I saw some kids outside, let's go and have a Rootsy

or

"This concert is really making me hot....I think it's time for a Rootsy"

by deanoc316 April 24, 2009