My old DM’s favourite was the good old “you sure about that?”
Now and again they’d ask it as a bluff, so you never knew for sure if they were serious or not

I remember something my first DM did.

Player: Ok. I’ll open the door.

DM: You’re turning the doorknob?

Player: Wait. Never mind. I’ll search first.

DM: Too late. Which direction do you turn the doorknob?

Player: Sweating. Um… clockwise?

DM: And which hand do you turn the doorknob with?

Player: Ri-… Left.

DM: And do you push or pull the door?

Player: Push…

DM: The door swings open.

The entire table was dead silent for a full 30 seconds. Nothing ever happened. Or if it did, we never made the connection to the door.

That DM was a joker. Lol.