You don't fill a cup with warm water to rinse after? I'm pretty sure most bathrooms I've seen have a toothbrush and cup sitting there.
Um...people do realize (I hope) that when a toilet is flushed - especially with the lid up - that aerosolized particles from inside the toilet bowl gets spread over everything, right?
This means a toothbrush left out inside a drinking cup on the counter is probably not anything you'd want inside your mouth.
It is also a good reason why frequently changing any towels that you use that have been hanging on a bar by the shower/toilet is a good idea.
The make-up/curling iron photo looks familiar - when my daughter was still at home, this was the state of her bathroom 99% of the time. Plus every surface had a thin layer of hair spray - and let's face it - poop on it. Eeesh.
Saw a TT video the other day of a man who "surprised" his girlfriend by backing her into the bathroom under the pretense of giving her a surprise. Then on the count of 3 he had her turn around to see he had taken a hammer to every bit of make up she owned. All in a way to demonstrate (I guess) that he loved her without the make up. She looked like she wanted to fucking strangle the dude and was literally crying. I hope like hell she dumped his sorry ass.