Flip Flop - my two have their litter tray in the bathroom. A couple of times I have had visitors using the facilities but hadn't shut the door properly - Frankie just stomps in and used his litter tray whilst glaring at the human who is using the WC next to it. It freaks folk out.
Lottie - I think it is meant to keep an eye on you once you go senile, so if Mr Lottie suddenly has you implanted with a GPS transmitter you will know that he thinks that you are losing the plot.
I am sure that I am not the only one who thinks that this lady in the You Tube clip is nuts.