I want the funniest joke?

One day, a family of three flies went to the toilet to eat. When their mother and father were having fun, the little fly asked his mother:

"Mom, mom, why do we eat shit?"

Father and mother flies look at the baby and continue to eat without saying a word. After a while, the baby flew and asked:

"Mom, mom, why do we eat shit?"

Mother fly was furious and said angrily to the little fly, "Go! Don't ask such disgusting things when we eat! "