Imagine a universe where rappers are transposed into comedians. Dr. Dre rocks retro Redd Foxx, Eminem claims Rodney Dangerfield, Kanye West comes through as Richard Pryor. In that bizarro universe, Frosty the Flowman speak troot like Lenny Bruce. He’s your new favorite babysitter. Get the kids ready for a weekend with Frosty. On top of …