Paul Stanley: Putting hot pink hair dye in his shampoo (XXD!)
Gene Simmons: Release a trillion fake spiders into his house.
Ace Frehley: Stealing all of his guitars and hiding them somewhere.
Peter Criss: Spray him with a water gun while he's taking a cat nap.
Eric Carr: Making Voo Doo dolls out of his drumsticks and scaring him with them.
Eric Singer: Put stink bombs all around his entire drumset.
Tommy Thayer: Telling him that you accidentally posted some of his baby pictures on the internet, but they're actually photo shopped from different baby photos.
Vinnie Vincent: Offer to give him a scalp and head massage, and while he's not looking, you put a fake cockroach on his face.
Bruce Kulick: Make his hair into dog ear pony tails while he's asleep and then after taking a selfie with it, you post it on Instagram.