Don't worry, they'll tell you.
A. Because everyone keep recycling the same jokes
Because if it were invented anywhere else, it'd be called teethpaste.
There used to be exactly two, and now it's too offensive to talk about.
M: *stumbles out of pantry with Nutella all over my face* nobody
Hometwerk
A: Tell her to demonstrate the proper usage of an electric chair.
Because the pilot was a loaf of bread
A watermeloin.. Don't worry, I remember where the door is.
Don't worry, the dinner's on me.