By the way this can only be used as a come back.
NEVER use this on old people because they might have a heart attack.
Step 1: Stalking
Make sure they dont notice you and become suspicious. BE CAREFUL lol.
Step 2: Where to Hide
This always works with my sister because she always craps herself. lol
Step 3: Costume
Step 4: Scaring Time
Remember not on old people.