Your weenis is the jiggly bit of extra skin on a bent elbow. Go ahead and pinch it! Eveyone has it, even chicks!
Walk up to complete strangers in public and say, "Excuse me gentlemen, but can I touch your weenis, please?" Then get then to stand like they are being frisked, with a puzzled look on their faces, to the amusement of your friends. Beware of asking Old Balls guys, as the weenis tends to sag in old age.