Bringing ShitPosting into the real world!
Send your friend, mum or self a piece of fossilised shit!!
It's called Coprolite, and I was originally calling this the Pack-A-Poo because there's a Chinese lottery called a pakapoo and this sends out a random piece of poo so you get a pack 'a poo. But I think it was way too layered of a joke or just not funny, so how about ShitPosting?
