It's all about opening the throat, he could give a lesson sometime if you want! A very… weird and likely uncomfortable lesson. (That waiter is right, he's a little crazy, but right now he's a fun crazy.) Lance blinks at Midoriya when he confesses that, not really understanding at first.

"Wait, waaait wait wait. Don't tell me you feel like you have to make sure nothing bad happens to literally everyone all the time?? That's… dude, that's crazy! And impossible!"