A bathroom is a wonderful thing to have in your home. You must admit they are very useful. But normal people don't spend a lot of time hanging around in them. Bathrooms are small, full of hard surfaces, and sometimes very humid. It's different in the movies and on TV. It's possible you've noticed some Hollywood tropes about bathrooms, or maybe they've never crossed your mind. If that's the case, you'll be surprised by the many times the same weird thing goes on in a bathroom across different fictional worlds.
The only reason you should ever be fully clothed in a bathtub with other people is if you've been murdered or you're training your Olympic bobsled team, yet for some reason it tends to happen in movies quite a bit. Characters love to sit fully clothed together in a bathtub and bond as they talk about their lives, hopes, dreams, and how they don't even own enough towels to get them dry now.
That's followed by an unreasonable number of examples. (However, if you are in the path of a tornado and don't have a basement, it is recommended that you get into the tub fully clothed.) Other weird bathroom events concern testing a shower's temperature, rinsing one's teeth after brushing, and more odd things that only happen in the bathrooms of Hollywood, at Cracked.