This misuse of “literally” is such a thorn in my side, too.
Weird Al’s “Word Crimes” expresses my sentiment well:
And I thought that you’d gotten it through your skull
‘Bout what’s figurative and what’s literal
Oh, but just now (just now) you said (you said)
You “literally couldn’t get out of bed” (what)
That really makes me wanna literally
Smack a crowbar upside your stupid head