A shmuck is a massive nob head who has a surname with the letter c in it
Human 1: grace is such a nob head
Human 2: yeah she’s a shmuck
An annoying idiot,also a troll
Gabe: are you going to the Jaylen Brown thing
Danny: I don’t know (he knows he’s going)
Gabe: Ugh you’re such a shmuck
Someone who has been dumb and you don’t like them any more.
Dude1: *trips over a table*
Dude2: ha watta shmuck
An insult to imply someone is useless (as the removed foreskin). Usually more descriptive of the user than the subject.
This shmuck just totally cut in line in front of me. Doesn't he know I need my Starbucks?
someone who’s a dickhead all the time
“aye shut up you flippin shmuck-head”