If I was a student at Hogwarts I’d use Howlers to send nice messages to people.
So you’d be sitting there in the Great Hall eating breakfast when an owl drops a Howler in front of you. You, and everyone else on your table, just stares at it as it trembles, explodes open, shrieks I WANT TO TOUCH YOUR SWEET BUTT and then dissolves into flames.

Remember, remember, the Fifth of November, the Gunpowder Treason and Plot. I know of no reason why the Gunpowder Treason should ever be forgot.
The Avengers Meme: Nine Quotes [1/9]
↳ If we can’t protect the Earth, you can be damn well sure that we’ll avenge it.
The Avengers’ cast { Chris Hemsworth, Jeremy Renner, Robert Downey Jr. and Chris Evans } supporting the campaign against domestic violence, Oggi Magazine Apr 2012.