A Monica Lewinski Share definition Flag When a guy cums on a person's clothing that has just performed oral sex on the guy. "Dude, last night Sandy was sucking me off and I gave her a Monica Lewinski! Her shirt's real stained!" A Monica Lewinski by Don Juan, the Gynormotron March 20, 2009 0 0 Get merch Get the A Monica Lewinski mug. Buy Now — $32.95 See more merch