Giovanni Diviacchi

MC Slimm Slappy

Giovanni “Gio” Diviacchi is a stand-up comedian, DJ and improviser known to Washington audiences as MC Slimm Slappy. At DC Improv, he hosts Can I Get a Yes And, a jam where people can arrive on their own, meet their scene partners and make something up together. He has also performed in the club’s Make Up Party shows.

At Washington Improv Theater’s 2025 Improvapalooza, Gio took the stage for Play, the Games Show. The premise turned an improv tradition around. He started with the ending and let the scene unfold before asking the audience what their suggestion would have been.

For Swish and Sway, Gio opens the evening as MC Slimm Slappy. Between turns at the microphone, he joins his wife, Chandra Diviacchi, for “Hijacked” and “Monkeys in a Room.”