In case you don't know, it's a radio/ audio tape player/CD player. The Ghetto Blastro has appeared twice. The first time was in The Luau, where Strong Bad used it to play music for his party. The second time was in A Jorb Well Done, where Coach Z put Strong Sad's audio tape into it to learn how to say "job."

As far as origins, 'Ghetto Blaster' is a generic 80s term for a boom box, so named because of the proliferation of bass-filled rap music at the time and the usage of the word 'ghetto' to describe the inner-city homes of many rappers. It was also the finishing move of a WWF wrestler named Bad News Brown (aka Bad News Allen). - PhilNelson