New Kid on the Block:
A person new to the area or group of friends.
I guess I’m the new kid on the block, right?
New York Minute:
Time that seems to pass really quickly.
That movie went by in a New York minute!
To reject something or to disagree.
No dice. I’m not giving you the front seat of the car. I’m riding up front!
None the wiser:
To not know something even though you should.
Despite the fact that he explained how to get to calculate the area of a circle three times, I was none the wiser.