Sulfur Hexaflouride Voice Wakeup

Go to someones house while they are asleep and kill the house' s power.

Dress in realistic werewolf  costume.

Acquire 30 ounce tank of sulfur hexa flouride and  conceal it in costume.

Attach  an outlet tube from tank leading into werewolf's mouth

Breathe in the dense gas and your voice is rendered semi demonic.

Stand in bedroom corner and whisper sleeper's name until conscious.

They will wake up to the most sinister voice they've ever heard.

Film reaction of this individual and others after inhaling SHF gas.

Mythbusters introduced the gas to the world. I simply gave it a purpose.