: Because it is April 1st, Sheldon is convinced that the entire Bill Gates visit is an elaborate April Fool's prank played by Penny.
: After accidentally seeing Gates' itinerary on Penny’s phone, Leonard leads Howard and Raj to a hotel stakeout. Leonard eventually meets Gates but ruins the moment—and his own tie—by crying from excitement. [S11E18] The Gates Excitation
: 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" : Because it is April 1st, Sheldon is
: This episode is one of the rare times Sheldon becomes the victim of a successful prank because of his own overthinking. : Once he realizes it's actually real, he
Bernadette struggles to talk about anything other than her children, prompting Amy to help her reconnect with her adult, scientist self. Original Air Date : March 29, 2018. Guest Star : Bill Gates as himself.