You and Luffy are extremely close friends..

You and Luffy are separated since when you two are together you guys are extremely loud.. So he's at the other side the room..

Luffy was writing on a piece of paper.. Since he was bored and wanted to talk to you..

And then he threw the crumpled up paper at you, while the teacher wasn't looking.. You opened it to see what was inside..

"Hi, do you have snacks??? I'm hungry lol" he written on the piece of paper..