A journalist walks with a scientist through his lab, inspecting various objects, finally stopping in front of a large box with a door on the front.

Interviewer: What is this?

Dr: This is my onion deprivation tank.

Interviewer: Interesting. how does it work.

Dr: I close these doors, the person in the tank is totally deprived of contact with onions.

Interviewer: I gotta say, it smells a lot like onions.

Dr: Well, it is full of onions. It’s also made of onions.

Interviewer: In what way is that an onion deprivation tank?

Dr has no answer.