Who do you call when it's the police doing the harassing?

It was a graveyard fuck...

I don't get it.

Harley Quinn hits Dracula with a bat. Vampires can turn into bats. I guess you could say Dracula is a "bat man". Bruce Wayne lives in a mansion.

Is this just a pun on "bat man"? What am I missing?

Here's a good place to start:

gpg --gen-key

Then follow the prompts.

Many people today still choose not to believe it happened:

https://en.m.wikipedia.org/wiki/Holocaust_denial

...he should do anti-gravity next.

There's a python library for that.

This is patently false. Secure boot and hibernation are not mutually exclusive.

True story:

alias ipa='ip a'

It's the shaggin' wagon.

Zee shell ist die beste.

Came here for this. Heynongman.

it will make pretty much everything faster...

This is just not true. Environment variables are only going to be used by programs that are looking for them specifically. Putting them in your .bashrc as you have done is going to make them only available in contexts where that file is sourced, e.g. interactive command line environments.

...at the expense of breaking some commands here and there...

You probably experience this because you used a single > to overwrite your .bashrc entirely with that single command. Anything that was in that file before is now gone. Using >> will append rather than overwrite.

That variable in particular is probably one used by mesa, a 3D graphics library. It's only going to be used by programs that use the mesa library. I don't know what it does exactly, but there will be documentation somewhere.