Troll: If you make a box with mirrors, shine a flashlight into it and quickly close the box, you can retain light for later use.
Trollee: With all due respect, that is impossible, by the time you close the box, the light would escape. If you could close the box faster than 186,000MPH, the glass would definitely shatter due air friction itself.
Troll: You know nothing about fisiks. Have you ever tryed it?
Trollee: Look here you moron, learn how to spell first then come to my lab and I'll show you exactly why your hypothesis is invalid.