Shane Oman: Why are you eating a Kalteen bar?
Regina: I'm starving.
Shane Oman: Man, I hate those things. Coach Carr makes us eat those when we want to move up a weight class.
Regina: What?
Shane Oman: They make you gain weight like crazy.
Regina: Motherf -
she spits out the bite of the bar that she was chewing, and then she lets out a high-pitched scream
Regina: Aaaaaaaah!
for one to digress from a topic so far that one no longer is speaking of anything of any relevance to the topic.
The Kalejs Theorem in practice; "Okay class today we are learning about electromagnetic radiation" (Proceeds to talk about volcanoes with the assistance of tools to find relevant videos)