How do you guys preform the speed glitch and jump bost?

So I got a friend who is notorious for stealing the phones on any map is it possible to get a phone% or something. it would be fun.

This glitch allows for infinite Sanity even after the new Patch UPDATE 3

This is for fun, see if you can find any other uses for this

Discorvered by Gcat1425 and AquaVR