Welcome to the wild world of altcoin “pump groups,” where participants believe they are the wolves, but they’re actually probably the sheep.

“Pumping is the process through which a large group of people agree to buy a certain coin at a particular time,” reads the welcome messages for The Alt Pump, a pump group based in the messaging app Discord that has more than 30,000 members. “With this group, you will have large amounts of people buying a coin at the same time. This will pump the price straight up. After this the dumping part comes in. After the price rises tremendously up because of the pumping, we start selling at a good profit. This is called dumping.”