People use it for emphasis. EMPHASIS.
That was literally a Drake and Josh reference.
I'm literally the first to comment.
Good thing you added the literally or else I would be very suspicious.
Well personally I know I exaggerate things in my stories and I know other people do to. When people say "literally", the implication is they're not stretching the truth even a little bit.
Was that figuratively or literally? I literally couldn't tell. It's literally possible that you're lying unless you say 'literally.'
I am metaphorically a lion as swift as Anthony has sex.
i am literally a lion as swift as anthony has sex
Inb4 a load of comments using the word 'literally' in a humorous manner... oh, I'm literally too late.