That's because you underestimate the hunger of perverts.
Bread is bread, but what sort of bread do you eat when you're hungry?!
The correct version of the riddle/joke is "What sort of bread can't you eat even if you're hungry?", and hinges on the fact that 'bread' in Japanese is パン ('pan'), making the answer フライパン ('a frying pan').You have to get it right fiiiirst!If you wish to pass, answer this question, Momiji-chan!You have to get it right first!Wrooooong answeeeeer!Wa ha ha!Gensou Q&A ⇨
Q: Why is octopus ink black?
A: Because they eat salmiakki
(Sakuya)Long ago, the Sphinx used to give riddles.