Sanford and Son (1972)

S03E19 Lamont Goes Karate

Title: Lamont Takes Up Karate Plot: With Fred away visiting relatives in St. Louis, Grady is tasked with looking after Lamont. When Lamont returns home sporting a bruised nose, the culprit is revealed to be Jo-Jo Jackson, following a dispute over a girl. Determined to defend himself, Lamont takes several karate classes and heads back to the bar to confront Jo-Jo. Meanwhile, a worried Grady attempts to step in to prevent any further conflict.