Hurtle

A herd of turtles.

Damn my flight was cancelled at JFK because of that damn hurtle.

stemonstration

A demonstration of STEM, STEAM, or STREAM equipment such as a 3D printer. Generally used in a school or other educational setting. Can be abbreviated to "stemo," or used as a verb, i.e. to "stemonstrate."

Andrew: Can you show me how this new 3D printer works?
Tom: Are you asking for a stemonstration?
Andrew: A what?
Tom: A stemo.
Andrew: I'm just asking how I turn it on.
Tom: I would be happy to stemonstrate that.