I miei 2 centesimi

Aunt Rennin

19.33 - Luckily, our overlords at Google know everything. All hail the great and powerful, Alexa.

Aunt Rennin

19.34 - According to google:
The phrase "Great Scott!" is an interjection that expresses surprise, dismay, or amazement. It's thought to have originated in the 1850s as a minced oath, and was popular in the late 19th and early 20th centuries.

Aunt Rennin

19.35 - The phrase is associated with two prominent men named Scott: Scottish author Sir Walter Scott and US general Winfield Scott. Scott commanded an American army in the Mexican War and was the Union general-in-chief at the start of the Civil War. Some evidence suggests that Scott may be the source of the phrase (conceited, much?).

Aunt Rennin

19.36 - Other theories about the phrase's origin include:
• It's a corruption of the German greeting "Grüß Gott," which means "good day" 
• It's a polite way of saying "Great God!" in a curse-like manner, similar to what you might say if you stubbed your toe

Aunt Rennin

19.37 - The phrase is now considered dated, but it became a catchphrase for the fictional scientist Emmett "Doc" Brown in the Back to the Future franchise.

D S

Yes the first thing I thought of was Doc Brown lol

Aunt Rennin

19.44 - I'll be honest, I had it pegged as a Capt Jean-Luc Picard phrase. I fact checked myself before I said anything because my memory is truly awful from a traumatic brain injury (TBI).