Many special guests have dropped by Philly’s grimiest dive bar during It’s Always Sunny in Philadelphia’s 17 seasons, a star-studded list that includes Dax Shepard, Alexandra Daddario, Jason Sudeikis, Guillermo Del Toro, Keegan-Michael Key and even Sinbad and Rob Thomas, who played themselves in Season Four’s “Dennis Reynolds: An Erotic Life.”

A shift at Paddy’s Pub, however, is conspicuously absent from Olivia Munn’s filmography, a gap she says is thanks to a two-digit mix-up — one that still “kills” her — roughly 20 years ago.

Long before she made audiences laugh as a correspondent on The Daily Show, flexed Sloan Sabbith’s two PhDs on The Newsroom and managed to best her husband John Mulaney for the superlative of “the fun parent” to their two children, Munn was a young actress just getting her start in Hollywood, “auditioning, auditioning, auditioning,” as she recently told Andy Cohen on his Radio Andy SiriusXM show.