Madonna missed her “MDNA” album release parties at the Delano in Miami Friday and at Lavo in New York Saturday to head to electronic festival Ultra — but producer and DJ Deadmau5 would have preferred that she skipped the onstage drug slang. The Material Girl made what he took to be a drug-related reference while introducing Swedish DJ Avicii at the festival in Miami Saturday night, asking: “How many people in this crowd have seen Molly? [the slang term for MDMA, the active chemical in ecstasy, which also rather sounds like her album title].” While “Molly” is also the title of a new track by DJ Cedric Gervais, the resident DJ at Miami club Liv, Deadmau5 took offense to the reference, bashing her on his Facebook page: “Very classy there madonna . . . ‘has anyone seen Molly???’ such a great message for the young music lovers at ultra. Quite the [bleep’n] philanthropist. but hey, at least yer hip and trendy! [Bleeping] cant smack my head hard enough right now . . . I can appriciate [sic] her meteoric career . . . but what the [bleep] was that?”