One time my daughter fell (OK she did something silly and jumped) and hit her head on a metal pole at a science center (she's fine, it was just a couple of stitches). My wife took her to the hospital, and (mislead by the confusing signage) accidentally parked in the ambulance parking area directly out front. Later we collected the car and saw a parking ticket. On seeing that the fine was $40, I've immediately joked "oh, OK so premium parking is $40, nice."

Although, given this is in an area where streetside parking can be $20-$30 for a couple of hours...