On 20 January, 1982, Osbourne bit the head off a bat during a live show at Veterans Memorial Auditorium in Des Moines, Iowa. The creature, thought to be already dead, was thrown on stage by a fan.

News Ozzy Releases Plush Toy Bat With Detachable Head To Mark Anniversary Of Biting Bat's Head Off Because, 38 years after the event, how else would you mark the time you bit a bat's head off?

If you’re not familiar, here’s the short version: The rocker bit the head off a real bat that may or may not have been alive while onstage at a concert in Des Moines, Iowa, on Jan. 20, 1982.

“Today marks the 37th Anniversary since I bit a head off a f***ing bat! Celebrate with this commemorative plush with detachable head,” wrote Osbourne on Twitter.

Ozzy Osbourne is celebrating the 37th anniversary of him biting off the head of a real bat with a cute, plush bat toy. Well, actually it’s not that cute. To replicate the occasion, the plush toy ...

Celebrate with this commemorative plush with detachable head.” The 12″ $40 toy bat — whose first edition has already sold out — features the Ozzy logo and a Velcro detachable head.

The museum gave away green, limited edition mini-bats to the first 250 customers on Saturday, and they'll continue the giveaway on Sunday. Each bat is made special for the event, which is a process.