This is a Team DaNK mod.
Nobody likes falling from high buildings. It hurts, especially if you don't have any fancy feather-falling boots or new-fangled slime blocks. That's where Legs Hurt can help. Through a complex surgical procedure involving installing the mod and running the game, you can replace your legs with steel, rubber or whatever you want, stopping all falling damage instantly.
Usage demonstration:
The Legs Hurt Team
