There's a 7-year-old kid near Portland, Maine named Brock Chadwick who was diagnosed with brain cancer back in February. He has a type called glioblastoma, and the prognosis isn't good.
So to cheer him up, his great-aunt recently got on Facebook, and asked people to send him cards for Halloween.
She came up with the name "Brocktoberfest," and it's gotten WAY bigger than his family expected.
Hundreds of people from all over the world have been sending cards, candy, books, and other gifts.
He's been getting about 100 packages in the mail every DAY. And his mom says he's smiling a lot more because of it.
If you'd like to keep the send little Brock a Halloween card, here's his address.
Brock Chadwick, 11 McKenny Dr., Biddeford, ME 04005