Big Bang Theory Quote
Amy: So, do you know what it is?
Bert: Of course I know what it is. It's a silicon dioxide crystal, also known as quartz.
Sheldon: Are you sure?
Bert: Am I sure? Is basalt a mafic extrusive of igneous rock formed by the rapid cooling of magnesium and iron-rich lava? Yeah, I'm sure.
Quote from S12E02 - The Wedding Gift Wormhole