1) Insult for redneck/ghetto folk/trashy lowlife. name comes from the fact that very few of them have a full set of teeth, just gums.
2) a movie about two teen boys who wreak havoc in their hometown and their weird friends. Stylistically its like Beavis and Butthead meets Napoleon Dynamite. A little weird but a good movie on the whole
1) Don't hang out with those kids, their mad gummo
2)"Gummo" is a cult movie that people either hate or love