a verb or adjective involving being relaxed, lax, and chilled-out. Can be abbreviated to simply "moss"
Example 1:
Person 1: OMFG, I GOTTA CHECK MYSPACE Dude 1: Hey man, chase moss for a second, won't ya?
Example 2:
Person 1 (on the phone): Sup, what are you doing?
Dude 1: Oh nothin' really man, just listening to some O.A.R., downin' some brewskies.
Person 1: Damn! You are so (chase) moss
The sexual act of keeping your partners legs firmly together whilst you attempt penetration. Can also be used in the same vein post penetration and in many situations where instead of parting ones legs, you must keep them shut tightly together, thus its name.
My girlfriend made me Reverse Moses her last night, took 20 minutes to get the tip in, but damn was it worth it!