MemeMachineGo!

Yesterday I renewed my CPR certification (a prerequisite towards my personal trainer certification.) Did you know:

It's not called the Heimlich manuver anymore; it's called a J-thrust.

Once someone trained in CPR has so much as said "Are you okay?" to someone who's choking or who proves to need CPR, he or she is then legally obligated to provide care, and, if CPR is required, may not stop unless the scene becomes dangerous, someone of equal or higher training takes over, the recipient revives, or he or she is totally exhausted and can't go on.

If a choking person refuses your help, you cannot give it without being liable for assault and battery charges. However, having initiated caregiving with your offer, you're then obligated to follow the choking person around until he or she passes out, and then J-thrusting the ungrateful bastard. Unconsciousness implies consent under the law. (Note to frat boys: no, not like that.)

Despite what you would learn from watching TV, CPR pretty much never revives anyone. Usually, at best, its role is to prevent brain damage long enough for a defibrillator to arrive.