Think I found it

Posted by PC on May 05, 2004

In Reply to: More Fun Than a Barrel of Monkeys posted by PC on May 05, 2004

Just found this message:

Posted by ESC on August 29, 2003
In Reply to: More fun than a barrel of monkey's posted by SpudBoy on August 29, 2003

: Where did this come from?

From the archives:
barrel-/wagon-load of monkeys phr. [late 19C+] a type that is very cunning, mischievous, jolly or disorderly, usu. in phr. "artful as a wagon-load of monkeys."
From Cassell's Dictionary of Slang by Jonathon Green