705 Charlie and Foxy want to trick us?

Charlie Red and Foxy Saine were supposed to fulfil a wish for a good friend. They should inflate and pop two rare beachballs and pump up the coloured one and ride it until it pops. So far I have not figured how they did it. Probably with their fingernails, but why is the air coming out so slowly? The hole looks very much like a nailpop. They promised faithfully that it was not a fingernail. Well, I can not believe it. What do you think?