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.