What makes some comedy scenes maintain their humor even after being watched many times?

[freelancermaria]

There are many comedy scenes that are still funny even after being watched many times. Maybe the reason is that the delivery of the lines was spot-on and made at the right time. How about you? What makes some comedy scenes maintain their humor even after being watched a lot of times?

 

[Nomad]

Some jokes and performance become timeless. In my teen age days, I used to watch a lot of comedy shows and when I see the clips of these show on youtube, I still get a good laugh.