Ok. You have always plotting revenge on someone?
Always wanted to get back at them!
Heres some trolling tips.
1. When they are sleeping, but BEDROCK around them. Make sure theres no spaces or cobblestone or whatever on the wall, so they cant escape.
2. When they are mining, play scary music. it will freak them out.
3. Set a booby trap, and have a small little room with creepers/zombies/skeletons or whatever.
4. (My fav) Ok, put a ccart and some tracks or whatever, and have it lead to lava, or death, or something. they will slide down and you can howl with laughter.
5. Put LAVA when they are sleeping. No escapin that, hun.
6. (Have to have diamoinds) Ok, so you set a little room with a bunch of diamonds sitting around. They will get escited and go in the room. Then, after that, set a trap when blocks surround him, and he can barley escape.
Hope these help!