Flash Flood Acres is claimed to be The Largest Water Park in the Universe! in "A Ward Show". When Stan and Francine Smith see that Roger can make a good guardian for Steve, they decide to take a childless vacation that they had wanted for ten years. Stan and Francine decide to go on a vacation to Flash Flood Acres. But after spend two hours there they go on every ride, so they decide to get a refund from the manager, but fail when they learn he wouldn't be back until Thursday. They try to sell their eight day passes, but after that fails they decide to get even with the park by having sex in the biggest water slide. But when Stan comes in too fast, Stan and Francine end up in the hospital with broken pelvises.