(I am working at the bumper cars at an amusement park, where there is a height restriction.  A guy comes up with his son who is clearly too short.)

Me: “I’m sorry sir, your son is too short to ride on the bumper cars.”

Customer: “I just waited for 2 hours in line to go on the bumper cars, and you won’t let my son ride!?”

Me: “I’m sorry, but there are signs outside that show the height restrictions before you got in line.”

(The customer then proceeds to grab his son around the throat and lift him up by the neck and holds him up to the sign.)

Customer: “There! Now he’s tall enough!”

Me: “Get the h*** out of here!”