radial distance (R.O.S.) from a source of something that smells unpleasant (B.O., poorly wiped ass, out of control vaginosis, smelly feet, etc.)
Surfer 1: "Hey dude let me know when the R.O.S. of these sandles gets to your nose, then I'll get rid of them."
Surfer 2: "Dude, I smelled you walked up."
Surfer 2: "Dude, I smelled you walked up."
by position_x_force May 27, 2005