My kids buggered off upstairs to play around 2.30pm. We'd been out all day and they wanted to be off doing something without me. Fair enough. They've started doing that a lot and it's fantastic. After about 45 minutes I thought I better check to see what they were up to. It was pretty much granted that they'd trashed the place. In fact every room was a disgrace. But I wasn't quite prepared to find my son doing this.
And yes - he was washing it's bottom in the sink as well.