Click here for the comedic explanation (see number 5) and / or here for a video!As legend has it, an Indian man by the name of Lakhinder was bitten by a snake. Then, no surprise, he died. But his widow Behula prayed to the hindu god Manasa Devi, who brought him back to life -- and not even as, like, zombie-Lakhinder. So today, devotees to Manasa Devi celebrate this by hosting a traditional festival during which people bathe themselves in herbs and then let a bunch of cobras bite them
Not sure if it has been posted before, but a Cracked.com article is always a good read regardless.