Well, no one here said this was restricted to television, so here are some of the funnier clean movies that I can come up with off the top of my head…
Arsenic and Old Lace (utterly hysterical)
It’s A Mad Mad Mad Mad World (there is one scene with a woman in a bikini, but it doesn’t last very long and is not important to the plot).
Lilo and Stitch
Bringing Up Baby
It Happened One Night (yes, despite the risque sounding title, it’s pretty clean — the worst is when Claudette Colbert shows a bit of leg.)
The Princess Bride
Singing In the Rain
The Wolf