Hee Haw was an television variety show featuring country music and humor with fictional rural Kornfield Kounty as a backdrop. It aired on CBS from 1969–1992.
The Hee Haw "Hey Grandpa! What's for supper?" skit opened with Grandpa Jones cleaning a window pane (with no glass in it), then reciting a dinner menu in poetic verse. Often, he would describe a delicious, country-style meal (e.g., chicken and biscuits smothered in rich gravy, and collard greens), after which the audience would reply approvingly, "yum-m yum-m!"