“Make yourself at home!”
Translation: There are chairs you mustn’t use, out-of-bounds sofa areas, special mugs and glasses we never touch, strict rules regarding shoes, and we have one mystery room that you must not enter. Stay out of the fridge, don’t even think about fiddling with the thermostat or the toaster settings, oh and there’s a very specific way to flush the downstairs loo which we’re not going to teach you until it’s too late. But apart from that… make yourself at home!