Its US usage comes mostly from Yiddish, but fun story: I studied for two years in Germany after taking one semester of German (would not recommend, but it worked out), and on my first day, I told my housemate that she had some schmutz on her nose, and she was so excited about the German progress I had already made… I did not know at that time that Schmutz was dirt, but I’ve always remembered it
Yiddish has like 200+ words for penis, and zero for vagina. they were also used to describe personality types. a schmuck is a general dick. a schmuckgagle is a giant dick. a schmuckus is a baby dick. etc.
Chutzpah is great! There are tons of great Yiddish words. Some of my favorites are schvitz (to sweat; alternatively a sauna), schlep ([traveling] an annoying distance), mischigas (nonsense or nutty behavior, or kinda similar to a clusterfuck), noodge (kinda like a pest, but said with some affection), zaftig (pleasingly plump, like Christina Hendricks), and kvell (to be really happy/proud, opposite of kvetch).