Big News - Tall - The Big Bang Theory Season 12 Episode 23
Sheldon and Amy wait to hear big news on The Big Bang Theory. "The Change Constant" is the 23rd episode of the show's 12th season.

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Photo Credit:
Michael Yarish/Warner Bros. Entertainment Inc/CBS
Show:
The Big Bang Theory
Episode:
The Big Bang Theory Season 12 Episode 23: "The Change Constant"
Characters:
Sheldon Cooper, Amy Farrah Fowler
Related Photos:
TBBT Photos, The Big Bang Theory Season 12 Episode 23 Photos, Sheldon Cooper Photos, Amy Farrah Fowler Photos
Location:
Los Angeles, California
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The Big Bang Theory Season 12 Episode 23 Quotes

Sheldon: The only drug I need is the endorphins pumping through my brain in anticipation of our victory.
Amy: Well, technically, anticipation wouldn't be mediated by endorphins as much as dopamine but, y'know, you've been up all night so I'll give you that one.

Penny: Leonard? Coffee?
Leonard: Black and strong like Luke Cage.
Penny: I'm too tired to even be disturbed by that.