Okay, here's another "favorite" question...
There are some jokes on radio that would simply not work at all if you actually were watching them on television. There are several factors at work here. Radio takes advantage of things we don't see.
One example is when Jack rolled his pants legs up to show Dennis that his knees are sore from kneeling down and working so hard. Dennis whistles at him. We get a little chuckle out of it, but then later we hear another whistle when Jack steps outside. Jack yells at Dennis, but Dennis says it is the man across the street, and that Jack had forgotten to roll down his pants legs. (I think later still in the program someone else whistles at him... as he has STILL forgotten to roll them down.)
These kinds of jokes are impossible to do on television without it being obvious that the camera is avoiding something, and also that (in this example,) Jack isn't rollling down his pants legs after having been reminded.
On the radio, we forget more easily.
I have two examples right off the bat...
Jack and Bob Hope are going on a picnic with the telephone operators and they see a frog. All of a sudden we hear a splash and someone says: "Where'd the frog go?"
Then in a muffled voice, Jack says... "DON'T JUST STAND THERE, PULL HIM OUT!"
Also, many times when they talk about a strange animal or bird, there's always a punch line like, "Put that back on my head," that reveals that they were talking about Jack's toupee.
Does anyone have any favorite examples of this??