I can't believe I haven't seen this before: Also, you might ask, what is buttcoin?: "Buttcoin is a crypto currency based on butts. The way it works is that we have a global network of fax machines used to power a proof of ass based cryptocurrency. Blocks are mined by tattooing the transactions onto your butt (along with the hash of the previous block) and then faxing an image of your butt to everyone on the network. Assuming it's a legitimate picture of a butt taken the legitimate way (by putting your ass on the scanner), the rest of the miners will accept those transactions onto the chain." "Mining for comedy gold." "Read the wipepaper."