There's no funny business between these clowns. The American hip-hop duo Insane Clown Posse is saying "In Yo Face" to the Federal Bureau Investigation by slapping the government agency with a lawsuit after they labeled the group's fans a "loosely-organized hybrid gang," according to band's website.

More from E: Madonna called Barack Obama what?!

On Aug. 24, the group's legal team filed a Freedom of Information Act request demanding the FBI release whatever information led the organization to label their fans (aka Juggalos) a gang.

Since there was no response, the band's reps filed a lawsuit today in the U.S. District Court for the Eastern District of Michigan "for its failure to produce any documentary evidence in support of the FBI's classification of the groups' fan base."

More from E: Have you heard of "Snookiville Law"?

Last October, the FBI's annual National Gang Threat Assessment report classified Juggalos as "a criminal organization formed on the street," and even put them up there with the MS-13, Crips and Bloods. It also revealed that Juggalos have infiltrated the U.S. military and use social networking "to communicate and expand."

More from E: Wonder if ICP will keep the face makeup on for court?

"You're trying to grow love in your country and s---," ICP rapper Shaggy 2 Dope told Village Voice. "Then the head of your country -- the FBI -- just turns around and f------ kicks you in the nuts. How are you supposed to respond to that?"

More in NBCNews Entertainment: