Scientists/dermatologists: "guys, we need to do clinical trials but we can't as the FDA won't allow it."
Zombies: "meeeeuuuuh"
Dermatologists: "perfect to test my new skin cream!"
Scientists: "pinch me I'm dreaming, I'll take 3 for this potentially lethal drug test!"
Edit: Mythbusters: "We've got a new Buster, the Pool is open how long this one will last!"
Anyone testing safety with dummies, ballistics gel or whatnot: "we'll take a few dozen a month, dont wrap em we'll use them immediately."