Frog meat joke

I remember that on a short trip, the tour guide told such a joke on the train. What should I do without paper when I want to defecate in the toilet now? Haha, the sound of the train reminds you: pants wipe pants wipe pants wipe pants; Another day, you didn't bring any paper when you defecated by the pond. The frog's voice reminds you: stick, scratch, scratch, scratch, scratch. Frogs, like trains.