dorkish looks......like a loser.

If you watch Halloween Laurie rips his mask of right near the end of the film, in Halloween 5 at the beginning in the hermits shack you see him briefly from a distance and later on in the film he takes his mask off but stays in the shadows.

The part where Laurie pulls his mask off in the original Halloween (1978) is at approximately 1:30:30 (one hour, thirty minutes, and thirty seconds) into the movie. He looks sort of normal, but with big, bulging, staring eyes, really big lips and crooked teeth, which makes him look goonish and sort of like a gorilla. I have included a link to a picture of his face from the movie.

in Halloween 5 when he takes his mask of near the end and when he gets mad and puts the mask back on watch it in slow motion and hes real ugly.

Tybalt is angry because he is always looking for a fight, and Montagues crashing the Capulet party seemed like a great excuse to him. Capulet, on the other hand, had nothing personally against this particular Montague and in fact held him in some esteem. Capulet had crashed his share of parties when he was young. He doesn't want his wife's goonish relatives spoiling his party by causing a fight.