Tinder is easily combustible material used to start a fire. Tinder is a finely divided, open material which will begin to glow under a shower of sparks. Sep 28, 2015. Get a kick out of swiping left when that scummy someone pops up on Tinder? Well, the founders of Lady Parts Justice have just upped the fun- and scum-factor with Hinder, a parody of the dating app that, in its…