Lamont is That You? Sanford and Son : Season 3 Episode 6

Lamont and Rollo are out on the town one evening and decide to stop in at a new bar for a couple drinks. However, they soon realize they have stumbled into a gay bar. Unknown to them, Bubba just happened to see them go inside. Bubba promptly jumps to conclusions and then proceeds to tell Fred that Lamont is gay. Not believing Bubba's story, Fred decides to get to the bottom of the situation.