Tell me about it, I got triple-booked today several times because people have fucking URGENT problems like cancer that shows up on an ultrasound and they deserve to know ASAP, or debilitating knee bleeding that needs drainage so they can fucking FUNCTION at their physical job (job...what's that?!). Then an elderly patient passed out in my clinic during an appointment, so I had to have an ambulance come in and get him - looking after him and packaging him up took a good hour of my time. If some 500-pounder got upset they had to wait 20 minutes over it, I'd tell them not to let the door hit them on the way out.  EDIT: I'd also tell them not to get stuck in the doorway