LMFAO is not laughing at Rick Ross’s poor attempts to sue the group and is now demanding that the Maybach Music Group boss pay their legal fees.

theJasmineBRAND.com reports that June 7, Redfoo and Sky Blu filed court documents to say that Ross owes them $650,923.28 for the two years that they spent defending their case in court after he sued them.

Rozay sued LMFAO saying that they used the chorus from his 2006 hit “Hustlin'” in their “Party Rock Anthem” single, where the chorus says “Every day I’m shufflin’.”

A judge tossed the case out in April after finding that Ross did not have the proper copyright paperwork for the song, which is a cut from his Port of Miami album.