This is figuratively the worst thing ever.
"Literally" technically means "without exaggeration," as in "this thing ACTUALLY happened."
But these days some people use it just for emphasis.
Which is WRONG. Unless you actually IRL exploded.
Source: http://24.media.tumblr.com/tumblr_m5uqt5croa1qbaj4uo1_500.gif
Also kind of wrong:
Source: http://25.media.tumblr.com/tumblr_lrycf247P21qarlfso1_500.gif