[s11e18] The Gates Excitation -

: Because it is April 1st, Sheldon is convinced that the entire Bill Gates visit is an elaborate April Fool's prank played by Penny.

: Penny is assigned to be Bill Gates' guide during his visit to her office. Despite relentless begging from Leonard, Howard, and Raj, she refuses to let them tag along to a professional work function.

You can find more detailed recaps on the Big Bang Theory Wiki or watch the episode on platforms like Apple TV or TBS . The Big Bang Theory - The Gates Excitation S11E18 [1080p]

: When Penny later mentions that Gates remembered a "crying fan" with a ruined tie, Leonard has to pretend he was never there to avoid getting in trouble with her. The "April Fool's" Prank

: Once he realizes it's actually real, he desperately tries to find Gates. However, he ends up being the one pranked when the others send him to the wrong hotel. Bernadette’s "Mommy Brain"

In of The Big Bang Theory , the gang goes into a frenzy when Bill Gates visits Penny's pharmaceutical company. Episode Plot Guide The Main Quest: Meeting Bill Gates

While Stuart watches the kids, Bernadette and Amy go out for lunch.