I recently got an ad for some kind of scammy garden hose nozzle that supposedly turns your garden hose into a "military grade" (whatever that means) pressure washer but the ad had a weird conspiracy theory theme and kept talking about how the big corporations and Congress were conspiring to try to make the garden hose nozzle illegal because it was too powerful for civilian use. It was like it was trying to get the 2nd amendment crowd but it's a garden hose nozzle that you can buy from Lowes anywhere.

Also, as an aside, all of these things are sort of scams even when they're not taking a weird conspiracy theory route. While it is true that they can get decent velocity through the nozzle, it's nowhere near what a real pressure washer does because fundamentally it's not adding any energy to the fluid.