Being born with a penis does not predispose anyone to being the kind of person who will bully or hurt others. Boys may be more likely to engage in physical play and want hands on activities, but there's no connection between being kinesthetically oriented and intentionally damaging others.
My oldest boy is turning 5 soon. My youngest boy just turned 1. Between them I am sure that I could solve the energy crisis, if only I could capture the intense amount of vigor that zings and swirls around them all day (and night) long.
My middle son is the Recorder. He records unusual sightings, like a bear peeing or a running cantaloupe (turned out to be an antelope.) He's responsible for writing down shopping lists, fast food orders and game scores. His creative abbreviations like J.C. (just ketchup) keep us laughing.
Boys, like men, CANNOT multitask. If I ask my son a question while he is doing ANYTHING -- watching TV, brushing his teeth, staring into space -- he will likely ignore me (as will my husband). Scratch that. He won't ignore me, he just won't hear me.