It's how we operate.
To mark your place in the Herd, the members of KMC, you must assert yourself. Showing displays of your rage and intensity and "GRRR" helps display your role and rank in the community. It will also help if you mark your territory with regular applications of urine.
When some newcomer tries to say he's hot stuff you have to show him he's a chump and tell him as much so he cries and when he cries you poke himand laugh. This way he knows his role.
It's a healthy learning experience and will help guide the member for the rest of his days.
The guys at the mental ward of the hospital won't think about messing with him.