Do these step by step and I promise he will never bug you again!
1. put lego bits in obvious spots he would step so he always steps on pieces of lego and it hurts.
2. put puddles of water in his kitchen so he steps in it while he's wearing fresh socks, that sucks!
3. mod his stair case so each stair is a centimeter or two higher, hes bound to trip.
4. get old duck tape put it on base of skis and then after an hour take it off, should be some residue of sticky stuff, hell probably case every jump.
5. sticker all his stuff, helmet, skis, poles, boots, jacket, goggles anything you can get your hands on.( do this with really mainstream brands like oakley, smith, salomon, armada, or really lame ones like ripzone or elan n stuff like that.
6. put melted chocolate or gum in his jacket pockets, ski boot liners etc.
7. steal his ski passes, most ski hills will make you payy for a ne one if you lose it more than once.
8. steal his best friend.
9. report his fb account for being a shlong
10. pee in his butt!