George Lopez -- Erik Estrada Ain't CHiP to Me, Man! (TMZ TV)

George Lopez unloaded on ex-"CHiPs" star Erik Estrada with a barrage of four-letter words ... reigniting a long running feud that dates back to George's teen years.

We'd say it's time they bury the hatchet for the sake of La Raza -- but these guys both sound more interested in fighting to La Muerte!