Normally, Candace has an rather inconsiderate roommate, but even I was somewhat surprised by Megan’s behavior here. Maybe Candace had done something earlier that left ol’ Meg holding a grudge. Or maybe Meg just wanted to hear her roommate scream! Taking a shower instead of a bath can help save water, unless you are Megan!
Is it still possible to "use up all the hot water"? When I was a kid, bath water had to be heated in advance, but now it would only be theoretically possible to use the hot water faster than the heating can heat up new water.