You know the new Discovery CLASS missions
NASA's been working on?
The Big Bang Theory Season 8, Episode 21
I have a hip-hop aerobics CLASS at 5,
could we go after?
The Big Bang Theory Season 4, Episode 19
He said I'd be
speaking to a CLASS.
The Big Bang Theory Season 7, Episode 7
It’d be great if you were
rested for the CLASS.
Money Heist Season 1, Episode 5
This is why I didn't wanna tell you
I was taking a CLASS.
The Big Bang Theory Season 6, Episode 6