10 Ways to annoy Voldemort
Taunt him by saying that he could defeat everything but a 2 year old. (hp 1)
Tell him everybody hates him (including the death eaters)
Remind him that he was defeated and killed by a 17 year old. (hp 7)
Tell him "You made 7 hocruxes and still were defeated".
Steal his wand
Make him attend anger management classes
Every time you see him call him baldie
Ask him if he got bald on purpose or he thinks bald is the new thing.
Throw out all his cloaks and give him muggle clothes (imagine voldie in a t-shirt)
Tell him to go to the beach because he is deathly pale.