In the episode where zoidberg is in his mating season, when Edna is kissing fry notice that when she first put her mouth flaps on him, she had three complete visible view, then when they turned over she had two on the other side. that is 5. thats 1 mistake. then after zoidberg came in there was three on the other side. thats two mistakes. then when she takes her flaps off, there are four flaps. whoa. crabs of the future are weird.