R1O Share definition Flag Rub one out, Another term for masturbating. Another form of the word is R1O'ing, which simply means I'm currently rubbing one out. Ted: Hey broseph, let's play some COD.Tedward: I'll be on as soon as I'm done R1O'ing R1O by Sherbert Williams September 15, 2012 0 0 Get merch Get the R1O mug. Buy Now — $32.95 See more merch
