A vortex ring gun is a device that creates rings of vortex, also known as smoke rings. It is often used as a fun party trick or in scientific experiments to study fluid dynamics. However, it may not always go by that name. Some synonyms for vortex ring gun include vortex cannon, air vortex gun, smoke ring blaster, and vortex ring generator. Regardless of the name, these devices are capable of creating impressive smoke rings that can float through the air for a considerable distance. So next time you want to impress your friends with some cool smoke rings, you can use any of these names to refer to your vortex ring gun.