A W.A.D. is a Weak Ass Dude. A guy who walks around hanging onto his girl like she is gonna get stolen from him any minute. He eyes out anyone in the room who looks at his lady because he knows that anyone with a little confidence can steal her away. A confident guy lets anybody look at his girl because he knows she is going home with him. A W.A.D. puts on a tough guy look to make up for the pussy that he is.
Hey look at that W.A.D. that just walked in with that hot chick.