1) Tell him to stop staring at your ass (funniest if you're a boy).
2) Seduce him and steal his book while he's vulnerable.
3) Read the first page of it and call him a pervert, throwing the book at his face.
4) Say that you think Gai is cooler than him.
5) Draw a face on his mask.
6) While he's taking a shower hijack all of his masks.
7) Give him poorly drawn Yaoi featuring him and some absolutely random character for his birthday.
8) Ask to do his hair.
9) Cry when he says no.
10) Repetitively say "Please" In different voices until he says yes.
11) Dye it lime green.
12) Take his pants...or underwear if you prefer, and sell them on eBay.
13) Sneak into his room and blast Screamo while he's sleeping.
14) Steal his all of his bedroom furniture and watch from a distance as he wakes up and gets an epic "WTF?" face.
15) Call him a pedophile for butt poking Naruto.
16) Tie him to a tree and spoil the ending of Icha-Icha Tactics for him.