Can you ask a question, answer it, and give yourself best answer?

You can answer your own question .. Yes.

You can give your own answer a thumbs up .. Yes.

But you'd need another account to give yourself best answer

so that you're doing it as "another person" even though it's you again.

Yes

Yes you can answer your own question, I sometimes do for the sake of it. But you can't give your own answers best answer.

That's cheating .

Isn't that shellfish or seaweedy?

I'll find out in an hour.

I'm pretty sure you can't.

With multiple accounts you are able to be that pathetic

No

No