I am a great fan of Dad jokes; which are something that everybody 'enjoys'; enjoys making, laughing the first time, groaning or complaining in response the next score times, enjoys noticing the recurrence, enjoys making-fun-of, enjoys campaigning to try and stop... and so on.
A Dad joke is one that keeps on giving, year after year.
Here's a good example, from Junior Ganymede, of a Dad joke that mutated and started to evolve, to invade new ecosystems...
