Bigger Butt - Death Stench (Check Notes)

Overall this is nothing super crazy.

You'll just want to make sure REFramework is installed, then drag the mod into Fluffy and you're golden.

You can add this manually to REFramework, but if you're going that route I assume you know how to do so.

This doesn't alter any save data, and should pose zero risk. The mod simply tells the game client to use a different 3D model for the mesh, rather than the original. Disabling it in Fluffy will remove it entirely.