WrestleMania, the popular annual sports-entertainment spectacular, has been called off after World Wrestling Entertainment (WWE) was alerted that Flo Rida — whose musical performances are marquee highlights of the event — is not available April 8.

Mr. Rida, whose hits include “H.O.V.A,” “Straight Outta Compton” and “The Real Slim Shady” (note to self: double-check these before publishing article — I’m not sure mom is right), has become as much a part of WrestleMania as The Undertaker, long ramps, and obstructed views.

But Mr. Rida (real name Florence Henderson Rida) is already scheduled to perform a concert in Winnipeg on the night of WrestleMania, and WWE’s usual backup performer, Machine Gun Kelly, tragically got sucked down a shower drain last week, so is also unavailable.

A spokesperson for WWE said this morning that “it would not truly be a WrestleMania” without a 25-minute performance by Flo Rida, and that “the old saying that ‘the show must go on’ does not apply in this situation.”

Added the spokesperson: “No refunds.”