Generally, when people choke on meat it's because they took too large a bite. It happened to me once and it's very scary when you can't get your breath.
As a result, I'm very careful to cut any type of meat into smaller pieces,
If someone is choking, administer the Heimlich maneuver by grabbing them around the middle from behind them and placing your fist in the area of their diaphragm and pressing hard with your other hand on top of your fist.
If the person is too large for this maneuver, have him or her place their middle against the top of a strong chair and push against it.