He acts like a tough guy and can be violent at times but he means well. When you get through his tough guy act he's a good guy and really fun to hang out with. He can also be really smart but can act like an idiot a lot.
A combination of "pollex" and "expectation"
A phenomenon peculiar to our times "Pollexpectation" is the anxiety associated with waiting for a "thumbs up" as well as the mindless dismissal of others' ideas by "acknowledging" them with a "thumbs up".