Hobbies usually include: Screaming "Fuck Yea Bra" out of their sports car or lifted "extreeeemmmeee" off-roading vehicle, researching different combination of sedative drugs to slip into female's drinks, or just "bro-ing it up"
See also Dude Bro or frat boy
Dude Bra!!! can you grind that rail? said the Studemyer