Rapper Flavor Flav is public enemy number one after allegedly getting physical with his fiancee and threatening his stepson-to-be with a knife. The 53-year-old reality star was arrested around 3:30 a.m. when police were called out to the Las Vegas home he shares with his significant other. A police spokesperson tells TMZ that an argument between the musician and his bride-to-be escalated and eventually turned violent. In addition to laying his hands on his fiancee, Flav supposedly threatened the teenager with a knife when the boy tried to hold him back. Flav was subsequently charged with felony assault with a deadly weapon, as well as misdemeanor domestic violence. He was held on $23,000 bail and later released. This isn't Flav's first run-in with the law. He was busted on July 4 for possession of fireworks and disturbing the peace. In the past, he's also been on the receiving end of several traffic citations, along with possession of a controlled substance less than one ounce.