Oh god! I know that feeling! I work in ultrasound where we have quite a few outpatients. The bit I love is when an extremely well dressed, wealthy looking couple turn up with their dear old dad who looks like he hasn't been fed properly in weeks, has holes in his shoes and socks and is in a pair of longjohns that appear to be brown but are in fact white but stained with urine and other not so pleasant substances. This is how they treat their family! Not even some stranger they don't even know. Or the strapping 6'4" man who turns up with his immobile mother and proceeds to piss off to get himself a cup of tea....."Its okay dear, ill lift her myself shall I!?" Sorry! Having a "poor me" day;)