In the episode, while waiting for their phones to download software updates, the Gang reminisces about their past adventures in clip-show style, but their memories become warped, as does time itself.
Mac (Rob McElhenney) suggests that The Gang should remembers some memories from their pasts while they wait for their phones to download a software update.
Mac then suggests to remember all the times someone didn't know what was happening, including when Dee fell for a pyramid scheme[j] and when Charlie received a placebo effect from pills he was told would make him smarter.
Dennis explains that misremembering can change reality, so Charlie fake remembers him and The Waitress (Mary Elizabeth Ellis) having sex, and that she's pregnant with his child.
Their phones finish updating as a second Charlie opens the door to the pub, watching in, and the top continues spinning, implying they are still in a memory.