What's it like to get bit by a venomous snake? "It's like a bee sting times a thousand," Tim Friede says. Tim would know. Over the past few decades, he's let himself be bitten over 200 times by all kinds of venomous snakes — black mambas, taipans, cobras, kraits and more. With time, he's gradually built immunity to multiple types of venom. Could scientists help him share that immunity with others? Science reporter Ari Daniel joins Short Wave to explain how antivenom works, what scientists discovered and where the research may lead. Plus, what does Tim Friede have in common with Princess Bride?Want to hear about more medical discoveries? Email us at shortwave@nprg.org to tell us what areas of science you'd be interested in.Listen to every episode of Short Wave sponsor-free and support our work at NPR by signing up for Short Wave+ at plus.npr.org/shortwave.