A schmuck is someone who's being annoying or foolish.
You might hear people use "schmuck" in conversations about politics or social issues - it can mean anyone who holds an unpopular opinion or behaves in a way that seems silly or absurd. For example, if someone is loudly and proudly wearing a ridiculous outfit, you could call them a schmuck. It's not meant to be a serious insult, but more of a lighthearted way to poke fun at someone who's being a bit too much. Some people also use it in the context of being taken advantage of - like if someone is easily scammed or ripped off, they might call that person a schmuck for their own foolishness. It's an informal word and not commonly used in formal writing or speech.
A jerk; a person who is unlikable, detestable, or contemptible because he or she is stupid, foolish, clumsy, oafish, inept, malicious, or unpleasant.
