Pinching the skin of the testicles, and rolling it between your fingers, immediately relieving your itchy balls.
Woman: "you always scratch your balls for minutes at a time! GROSS!"
Man: "i'm not scratchin them.. it's a rollo"
Woman: "a rollo?!"
Man: "yeah, you know, when you pinch the ballskin and roll it between ur fingers cuz it's itchy!? DUH"