T4R
I would probably lure him in deeper into my room with my box of cookies next to me, and when his fat self is least expecting it, kick his shins so that he falls over. Then I'd look at him and laugh.
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> dumbfounded look > run opposite direction > run back with blunt weapon > showdown of the day > fatty grabs love handles and spins > disgusted > slap his fat > mushroom cloud