The busier you are, the more you need to waste time. Today, facing numerous pressing tasks, I started from a link at aldaily.com and found my way to an ancient Greek joke book, the oldest known & extant one, which actually can be read on-line here.
Samples of ancient Greek humor, which certainly ought to make us feel better about our own comic tradition, include the following:
An Abderite saw a eunuch talking to a woman and asked if she was his wife. When he replied that eunuchs can’t have wives, the Abderite asked, ‘So is she your daughter then?’”
An egg-head doctor was seeing a patient. ‘Doctor’, he said, ‘when I get up in the morning I feel dizzy for 20 minutes.’ ‘Get up 20 minutes later, then.’
A student dunce is voyaging on a very stormy sea. When his slaves start to wail, he tells them; "Don't worry - in my will I set you all free!"
Cultural overlap notwithstanding (since the Greeks are our precursors), the human genome must have a sequence somewhere for corny jokes.