The Big Bang Theory (TV Series)

The Wedding Gift Wormhole (2018)

Brian Posehn: Bert Kibbler

Photos 

Quotes 

• Amy Farrah Fowler : So, do you know what it is?

  Bert Kibbler : Of course I know what it is. It's a silicon dioxide crystal, also known as quartz.

  Sheldon Cooper : Are you sure?

  Bert Kibbler : 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.