Talking out his arse is really all he ever does. Joel is an overweight, bald, fat-********, uneducated man-child, whose lack of maturity has earned him a criminal record. Due to his insecurity, he not only feels the need to metaphorically beat his chest online like a primate, but he defines his self-worth through things like how much money he can convince others that he makes, to the point where he may actually believe his inflated claims.
He prides himself on his intelligence, though he never displays it, overlooking or avoiding all valid points someone brings up in a debate instead of looking up the big words that he doesn't understand and forming a proper counterpoint.
Edit: LOL, it censors it when you use finger as a past-tense verb.