The US loves to sedate. You guys get absolutely blasted when you have your wisdom teeth removed. In most of Europe you get strong pill painkillers for the first few days and then it’s paracetamol.
Post-care is a few day's worth of entry-level painkillers unless the patient gets a dry socket. We use acetaminophen for post-treatment rather than paracetamol, since it's better (never understood the British obsession with that stuff, it's nasty business).
Anywhere else I would walk away from a terrible joke like that, but this is HN. I'm joking.
It's also a rare joke where explaining it won't reduce the effect: by the time a Brit hits the end of the offending sentence, it's too late.