When a guy's arm is around a girl's waist, and the hand of that arm awkwardly rests beside her if the guy is too afraid to place it on her thigh, butt, etc. Often confused with awkward arm, but is not the same thing
Boy: "Dude, talk about an awkward hand when you were cuddling with Matt the other night!"
Girl: "I know! Someone needs to tell him to do something about that."