The Neolithic Advance of Humor

Neolithic times took the hand axe ...

to art

from which

enjoyment 

grew into humor

...

The book Following the Sun (p. 246) described Danish tribes contemporaneous with the pictures:

During the Neolithic period, agriculture and cattle herding became part of their livelihood in both Denmark and Scotland, and around 1000 B.C. the Danes began building large moundgraves, which have been the source of rich archaeological troves. One of these artifacts was a bronze chariot found at Trundholm Bog in northwest Zealand, dated about 1400 B.C. The artifact resembles a child's pull toy. It is a wheeled horse...