Step 1: Send your friends this text...
Step 2: Wait for the hilariously awkward selfies to roll in...
While some of your friends won't have a clue what's going on...
The friends who know your mischievous side will immediately figure out what you just did them to them, and might send you one of these...
Just watch out for that one smart friend who already knows the trick...
Now go forth and prank your friends! Add the best selfies you get to the comments below.