A reference to a clip of the Spanish version of the Simpsons episode "Cape Feare". In it, Homer screams each time upon hearing the names of the places where he may move to while under FBI protection.
Some time after finding this video, Jojo changed his World of Warcraft Steam shortcut to "Homero Aaaaaaghhh!". The common reponse to him going into World of Warcraft is "Hey, you're not playing Homero Aaaaaghhh!".