An illness, caught by spending too much time on the internet. Symptoms include; using 'lol' or other acronyms as words in everyday life, declaring actual objects to be photoshopped and sticking captions to cats.
Person 1: I think you'll find that you're mistaken
Person 2: omg! stfu!
Person 1: What?
Person 2: Internetisis, I have a note from my doctor.
Person 1: Oh, I see. Hope it gets better.
Person 2: yeah, me too, lol.