Zoit slang exclamation dated
Used to show shock, surprise, or alarm
Zoit! I forget to pick my daughter up from school.
Zoit, I forgot to lock the door.
The origin of this slang is not clear.
If you fall for someone's trick the first time then they are at fault.
Are you going to mess with me again? Fool me once, shame on you; fool me twice, shame on me.