Lemony's Nicket is a horse.
Or an otherwise a play on words for Lemony Snicket, a well known author's pen name.
A nicket is another term for a pile of sticks 3 feet (0.91 m) in length and 2 feet (0.61 m) in circumference. It is an archaic English unit of measurement.
Can you get banned for saying the name of a well bred show horse in astonishment, much like proclaiming "BY ODEN'S BEARD" without any other context?
To answer your question directly; I don't think so, but I wouldn't bother testing it, either.
As to the matter of your question...Do you think it's in any way subtle, what you're asking? It's pretty easily transparent what you're trying to do, especially when you specify this;
A nicket is another term for a pile of sticks 3 feet (0.91 m) in length and 2 feet (0.61 m) in circumference. It is an archaic English unit of measurement.
You're clearly trying to work around the zero-tolerance system, and I genuinely don't know if you think you're clever or that your absurd specificity and knowledge of niche/archaic things (such as show-horses) is in any way going to hide what it is you're trying to do.
If you want to invoke names in astonishment, just do the normal thing. "Oh my god", "By Odin's beard", "Jesus christ", etc.
If you are trying to insult others with a circumvented method of hate speech, why not just use jibberish like rkdjfjxjrichaoepvwlfsowkdncjekekz instead?
