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The internet has a million and one references to invisibility, and this meme depicts just four. The camo represents camouflage known for invisibility in war fields; John Cena is known for his “you can’t see me” phrase, the green screen is famous for editing and invisibility in filmmaking, and the graphics above represents invisibility in editing.
Big props to that fellow for sticking to the joke until the very end, because I really can’t see this invisible post either no matter how it is presented. On the other hand, he might have caused a great deal of confusion to other netizens who could keep up with his high sense of humor.