1) He scratches his sideburns when he's shy or nervous.
2) Whenever he takes a drink from his soda can, he sips the lid to make sure there's no left over soda.
3) He never knew how to do his own ties correctly
4) He cannot wink or rarely can, nor can he roll his eyes. He moves his head to roll his eyes. He either blinks both eyes (and he uses his whole face) or he doesn't blink them at all and gets embarrassed.
5) When he makes a funny joke and knows it, he ducks his head a little and smiles at his accomplishment.