"Calm down man, don't even joke about threats like that." Shemp says sharply. "You're men. You don't need claws to settle disputes!"

"Besides," He says, slipping back into the casual tone of voice he was using before, "The Mole Rat dies like everything else, it just doesn't get any weaker with age. For immortality, there are species of Jellyfish. And for straight up 'you-can-not-kill-me-no-matter-how-hard-you-tryabillity,' there's this tiny little thing called a Water Bear. If you mix all three you'd probably get as close to true immortality as is possible to come."