Has a locknut that needs to be opened to inflate/deflate. In so doing they helped inflate the bubble economy to grotesque proportions. Multiple posting instead of editing prior posts can artificially inflate a user's post count. Later designs used air under pressure to inflate the bladders. The inflatable arm uses pumps to inflate the arm. It reduces the pressure difference needed to allow the lung to inflate. This increase in assets allowed the Federal Reserve to further inflate the money supply. There are also vibrating butt plugs, and butt plugs that can inflate and expand. Some organizations may wildly inflate their numbers. How information is categorized and tracked may also inflate or minimize the apparent results. Some whoopee cushions inflate on their own. This would inflate the money supply, and, adherents argued, increase the nation's prosperity. Like other pufferfish, it can inflate itself with water or air. The chiefs would often inflate the population figures to claim more aid rations. A chemical reaction produces a burst of nitrogen to inflate the bag.