Black Eye Wonderscope Prank

Rrr you ready to provide one of the best pranks in history! Ask your friend to take a peep through your new kaleidoscope. When they look through and press it to their eye, a black ring will appear which looks like a black eye.

The funniest part is that they will not even know it has happened, see how long you can get away with your prank without them noticing.