(my) momma didn't raise no dummy American British informal
I am not foolish, silly, or gullible
I have already acquired this foundational knowledge from the first lesson. My momma didn't raise no dummy!
They reckoned that they could take advantage of me to borrow money, but my momma didn't raise no dummy.
Jane urged me to send an application since a vocational training course has opened. But I soon realized it was just a joke, my momma didn't raise no dummy.
1. To punch a hole in one's ticket to show that they have paid for a ride
2. To do something that allows one to go further in a competition or to be promoted at work
1. Please, tell me if I forget to punch your ticket.
2. With a view to punching my ticket to the final, I did whatever it takes to win this round.