It's when you, like...grab someone from behind to stop 'em from choking? I've only seen it in movies, I think...

[ So basically, don't choke, because he's going to be pretty useless in saving her if she does. He prefers mouth-to-mouth anyway......

The bag of "edible" lands in his lap, and Prompto withers as he lifts it into his hands, opening it and sniffing the contents. ]

What does it taste like? Anything?

[ Sure, she looks okay, but even if this stuff won't kill him, he's pretty reluctant to eat it. ]