Must have been food poisoning!? Three peeps (mother and two young ones), all with the urgent "Nature is Calling!" action, go into the bathroom at the same time. When they came out, you guessed it... the toilet was clogged! I figured the three were wiped out, so I sent father in to fix it.

I thought I had read that the toilet and shower used a reserve system so it couldn't be occupied by more that one at a time.