1.treaten Gai that if he doesn't pay you 500$,you'll shave off his eyebrows
2. stuff socks down Gai's under wear and tell EVERYONE that Gai recently got plastic surgery
3.start a rumor that Gai pissed in the bed every night since he was 6
4.tell Kakashi that Gai finally admitted that Kakashi is WAY more powerfull than him
5.tell Gai's team that Gai secretly wears a red thong
6.kick Gai in the wiener and run as fast as you can
7.steal Gais clothing and force him to wear pinkand make him sing;'there ain't no mountian high enough' just for kicks!
8.start a rumor that Gai is a peeping tom and always watches Kakashi naked in the shower
9.Tell someone Kakashi is really hot and Gai is really dorky while standing next to him
10.tell Gai the color green is the gayist color in the universe