One line that always makes me laugh

I was rereading goblet of fire and ended up in a fit of laugher for this one line that Harry says to Ron. He throws something at him and then says “Something for you to wear on Tuesday. You might even have a scar now, if you’re lucky. . . . That’s what you want, isn’t it?” 😂😂 Absolutely roasted him lol.

What lines from the books make you laugh?