Spray on shoes

Spray on shoes is a failed invention created by Flint Lockwood

Early and main usage
Spray On Shoes were created to solve the untied shoes dillema. It worked partly once you sprayed them on you cant take them off. They grow with the wearer's feet.

Later usage
Spray on shoes was later used to destroy the FLSDMDFR. And even later as a roof sealent.