[ Meanwhile in Jaune's mind, he wonders if this is what Pyrrha felt like when she had to show him the simplest things. He's certainly smiling the same way she did. ]

Well, you can't know everything about everything. I would know.

[ His hand rummages through his pockets until he shows her a fistful of coins. All random change. ... There's also a loose button in there, just to remind everyone that he's still an idiot. ]

Vending machines are like shops, y'know? The way it works is you put money in them, and... then pick what you wanna get in exchange. Wanna try?