When I was in high school kids on the bus were afraid of getting yelled at by me. I never really knew why but I used it to my advantage and I still do. I don't do it for s and giggles, though, I just do it to douchebags.
There are very few people that I hate to get angry at me, because they're so intimidating when angry. Two of those few people are Rye Mama and foa.