CobaltBomber said:
Telekinesis, even at low levels, could scramble someone's brain like an egg beater. And by selectively using it on atoms, you gain limited heat/cold powers.
DnD: Grease can be fun. Use it on somebody's armor and cast a low level fire spell. Hehehe.
Ohhh that's just evil.
Even the weakest powers can have really disturbing uses which are usually not explored or covered off by illogical restrictions (like the generic 4 elements inspired cold or fire powers - despite cold and hot being, really, the same thing. If you can manipulate the atoms to move faster, you can make them move slower)... Like, using telekinesis or any generic heat/cold powers on inner organs.
I'm still trying to think of some less obvious lame power... Talking to fish? Nah, that's too obvious - and arguing with lobsters isn't fun, assuming they'd even count as fish (they shouldn't, really, but I've got no idea how they handled it in Aquaman and whoever else had such a lame ability)
Hmm..
I guess using X-ray vision to cause cancer in people should be hilarious to watch. Assuming you're not the victim.