When Leonard and Howard find out that Sheldon worked with the military behind their backs, they are furious and ask Kripke to help them, much to Sheldon's annoyance. Meanwhile, Bernadette asks Raj to see if Ruchi is trying to steal her job.
Did You Know?
This episode was taped on October 24, 2017. See more
Sheldon says that sonar is based on bats, but sonar is for marine use: bats use echolocation, which is a similar yet separate biological mechanism. See more
[about his ex lover
I can't believe she dumped me.
This is tough for me, 'cause I can.
References The Kiss
History of Everything
Written by Barenaked Ladies
Performed by Barenaked Ladies
[Series theme song played during the opening titles] See more