1. Boy"Mom know what's funny?"
That get's him every time.
2. Mom" son does your face hurt?"
Son "no why?"
Mom "because it's killing me"
(my brother used to say that to me all the time when I was a kid now I get to finally use it on someone)
3. When he let's gas out (fart) say would you tell your butt to stop talking smack
4.When he is sitting at the table doing his homework stand behind him and pass gas on his back (his daddy does that to him) he cracks up for hours at that one and even tells his friends.
5. Just say the word FART causes uncontrollable laughter (even works with 6 year old girls)