I have a cousin whose neck stays on swivel -
-When I went out with him and his then fiance he'd stand behind her at the club - he's watching booty shake.
-Claimed to not like sitting with his back to the door - he's watching booty coming & going.
-On the escalator he stands behind her - he's watching booty ascend.
-At the park for a picnic, he straddles the bench have her sit between his legs - he's watching our friend's booty, lol.
At least he was discreet about it or she was the great pretender. (Or maybe she was watching other men too.)