Yep, that's a box.
Big fucking deal in the pyramid universe. The one where everything is a pyramid and boxes are triangular, not square. You just made that up. Look at you, so confident in your universe-creation skills. You should get like, a Nobel prize for multiversal science. Nobody came up with the idea for a universe of triangles before you did, so you're quite clever for coming up with that.
Anyways, it looks like the package your mom delivered for you has finally reached its target. You decide you're ready to open it.