Kill a friend by william commands

Step 1: Copy command below

Step 2: Open minecraft chat and type /give @p minecraft:command_block

Step 3: Left click command block and press CTRL+V

Step 4: Exit block, place button on side and press

Step 5: Place sign and wait for friend to come

Step 6: LAUGH YOUR HEAD OFF!

NOTE:
DO NOT CLICK SIGN YOURSELF!