The nail prank

For this you will need 

1wood nail(long works best)

Hot glue

Fake blood

First, you need to cut your nail in half

Then, you hot glue your cut ends to your finger

After you do that you paint on your fake blood

Now, go run up to someone screaming:

HELP!!

The cut finger

For this you need

katchup and a fake finger

Put some katchup in your fake finger and put it on go into the kitchen and cut it off scream and peope will sramble to call 911