Yeah, I see now that the snowmobiles were not invented until 1959. Best interpretation I could find for ‘skidoo’ was it’s short for ‘skedaddle.’ And the best for 23 was the hero of Tale of Two Cities was prisoner 23, and so the executioner called 23 and he was gone, skidoo.
I love the origins of slang.
https://en.wikipedia.org/wiki/23_skidoo_(phrase)
'23 skidoo (sometimes 23 skiddoo) is an American slang phrase popularized during the early 20th century. It generally refers to leaving quickly, being forced to leave quickly by someone else, or taking advantage of a propitious opportunity to leave, that is, "getting [out] while the getting's good." The exact origin of the phrase is uncertain.
"23 skidoo," first attested in 1906, combines two earlier expressions, "twenty-three" (1899) and "skidoo" (1901), both of which, independently and separately, referred to leaving, being kicked out, or the end of something. "23 skidoo" quickly became a popular catch-phrase after its first appearance in early 1906.'
Me too. Slang and swear words. Started in high school Latin with damno meaning to stop.