putting all of us to the test on some american history. >> is that mr. ed for 20? ♪ roundup ♪ ♪ roundup has a sharp-shootin' wand ♪ ♪ just point and shoot, and weeds are gone ♪ ♪ 'round fences, trees, even mulched beds ♪ ♪ 'cause the only good weed is a weed that's dead ♪ ♪ roundup ♪ [ male announcer ] with a one-touch wand. [ whip cracks ]