what is a pop top margaritaville

A "pop top" in the context of Jimmy Buffetts song "Margaritaville" refers to the pull-off tabs that used to be on soda or beer cans. In the song, Buffett sings about how he "stepped on a pop-top" and cut his heel, which led to him needing to cruise back home to enjoy a margarita. Therefore, a "pop top Margaritaville" is not a specific drink or item, but rather a reference to the lyrics of the song.