noun
schmuck
SHMUK/ʃmʌk/
A foolish or contemptible person.
The dishonest operator treats the trusting customer as a schmuck.

Etymology
East Yiddish shmok literally means “penis,” making the personal insult a transferred sexual term. The English sense carries contempt, not simply a judgment that someone is foolish or easily fooled.
In context
he kind of just looked at me like you poor schmuck you have no idea do you