The next time you complain because a joke is old and corny, you might want to read a bit about
Humor in the Roman Empire
Not just humor, but actual jokes that the Romans themselves told.
But be warned! You won't find much that's funny.
Not because they are offensive or insulting to modern sensibilities. No, they just aren't funny.
As to why 1700 year old jokes aren't funny, there's a perfectly reasonable explanation. It's the same reason jokes from old television and radio shows aren't that funny, either.
So for a little elaboration of what made thousand year old knee-slappers and rib-ticklers into old chestnuts, just click here.