(Ron was bitten by Sirius…)

Hermione Granger: That looks really painful.

Ron Weasley: So painful. They might chop it.

Hermione Granger: I’m sure Madam Pomfrey will fix it in a heartbeat.

Ron Weasley: It’s too late. It’s ruined. It’ll have to be chopped off.

From Harry Potter and the Prisoner of Azkaban (2004) | Produced by Warner Bros.