I was playing Minecraft and it just crashed randomly...

Put the summary of the bug you're having here

What I expected to happen was...:
Well I wasn't exactly doing anything. I was on a server and I jumped in a fire jokingly to scare my friend and it just crashed.

What actually happened was...:

Steps to Reproduce:
1. Play Minecraft.
2. Jump in a fire I guess...
3. See what happens.