12 Pranks To Play On An Angry Boyfriend

2. Shave-a-Thon

His Anger Level: 6/10

What To Do: While he's sleeping, hide behind his bed (or couch) and shave a single line down the middle of his head. Do this at your own risk if your boyfriend is holy about his hair.

Verdict: His anger will depend on how much he loves his hair. If you have a boyfriend who shaves his head often, then perhaps you're doing him a favour, but if his hair is down to his shoulders... well, then it's your funeral.