I am familiar with the origins. Just an off color joke.you misspelled shyster.
and btw, just in case you didn't realize it, that word is a DOUBLE insult to some. again, it doesn't really bother me, but it would do you well to know it's origin.
i believe the word shyster stems from shakespeare's character shylock. he's a money lending jew who wanted to exact a pound of flesh for one of his debts. it's a degrading role to jews. so using it to degrade attorneys really hits home in two areas for me.