I have several ideas.
- Everyone in the world will go on a hugging spree provided they are physically capable. If not, the closest medical personnel will treat their problems, then resume hugging strangers for 15 minutes.
- Everyone suddenly sees in Counterstrike vision, and a pistol as well as an assault rifle of their preference (or whatever gun they have last seen) will appear in their hands. An booming, divine voice with an echo will declare across the world, in the language each person is most familiar with, "FREE FOR ALL DEATHMATCH. BEGIN." This will ensue for 15 minutes, and at the end everyone will respawn as they were before the round began. The victor will receive a bucket of water.
- I will become Jebus Rice, our Lord and Savory for 15 minutes. Everyone will receive free bowls of rice in any form they wish, as long as they ask it from me. Each person only gets one, though.
- Fly into the sun.
- Reform the entire world within 15 minutes, and make it so that even after my influence is gone the people I have trained will continue my work.
- DESTROY COMMERCIALS. BWAHAHAHAHAHAHA! For 15 minutes.
- I always wanted a DeLorean, and a driver's license. For 15 minutes!
- Make my computer FIX ITSELF. GOD DAMN, WHY ARE YOU SO HARD TO FIX?????? Or at the very least have it tell me on the monitor what exactly is wrong with it.
- Make the world blow up every 10 seconds for 15 minutes. HO HO HO HO.
- Make science and math easier for humans to understand, for 15 minutes, I guess...?
- Eat Vietnamese food for 15 minutes. Hehehe.