No arm wrestling at the reference desk!

The reference desk where I work is an odd U shape, with a high counter where the librarian sits, and a lower desk area directly behind it. Today as I was working I heard some thumping and felt some alarming vibrations. Someone was jumping up and down, having come over to the librarian’s side of the desk directly behind me, and he then proceeded to crouch down to armwrestle another student. I guess he was jumping up and down to focus his Chi prior to armwrestling or something. I don’t know. I’m very happy that I maintained my professionalism by not saying the first thing that came into my mind, which was “What the hell do you think you’re doing?!!”

Instead I said “Take it outside.”
Student: “This will only take 20 seconds!”
“Take it outside.”
Student: “But this is really really important!!!”
“You can still. TAKE. IT. OUTSIDE!”

Really, most of the student rowdiness is confined to cellphone use and food eating in the library. This was the first time I’ve had an armwrestling contest at the desk.