The phrase 'that's what she said' was popularised as a running joke on the American version of The Office, where Michael Scott used it to turn almost any innocent remark into innuendo. The gag became one of the show's most quoted lines and spread far beyond the series through reaction videos, soundboards and short-form edits. Because the joke needs no setup, the short laugh that follows it works as instant shorthand for a cheeky double meaning, which is why creators still reach for it years after the show ended.