Reposting from heel of (lb):
Stock Market for Dummies: Gamestop’s Fantastic Success Explained
Short Selling, aka Pigeons vs Skunks
Normally investors follow a simple rule – buy low, sell high. However, some use a risky method called short selling, when an individual profits from the fall of the price. In short, it looks likes this. A pigeon has five seeds. A skunk asks for a short-term loan and then immediately sells the seeds, hoping that their price will fall before he has to cough them up. If the seed price falls, he then buys them at a lower price and returns them to the pigeon, thus profiting on the difference.
Essentially short sellers bet that companies will fare poorly in the immediate future.
https://sputniknews.com/business/202101281081902217-stock-market-for-dummies-gamestops-fantastic-success-explained/