Released in late January, there are currently four different Buttheads who make up what the toy company calls “a ghastly group that loves to let it rip.” And they all have very punny names: Grim Ripper (grim reaper), Tushi (ninja), Robutt (robot), and Brainfart (zombie). Each five-inch figurine has at least 20 signature sound effects, most of which are fart-related. Not only can kids pull the Buttheads’ fingers to trigger the noises, but they can also use the timer feature to “set a stink bomb to prank your friends and family, or challenge your friends to a stinky duel,” Romper reports. And the toys don’t just sound gross—they smell gross, too. The Buttheads each come with a scratch-n-sniff card that kids can collect and trade with their friends. The only thing sillier than the Buttheads themselves? The insanely catchy jingle that WowWee has come up with to promote the smelly statues. With the tagline “Buttheads, their heads are butts” on repeat, it’s sure to be stuck in your head almost as quickly as “Baby Shark.” Snag one while they’re still available because if WowWee’s other popular toy, Fingerlings, are any indication, they’ll likely sell out. As the Buttheads website says, “These cheeky champions are out to raise a stink!”