David:
When you whisper something in his ear while rubbing his arm. It drives him absolutely crazy.
Heath:
When your hand "accidentally" touches certain areas. It makes him blush and all you do is smirk at him.
Zane:
When you bite your lip. He thinks about kissing them and the other things those lips could do.
Scotty:
When you kiss his neck. All it takes is a few pecks and he starts blushing heavily. It sends shivers throughout his entire body.
Toddy:
Anything you do turns him on