See it free on Newgrounds,com now or on Youtube in a week.
Betsy Lee had to shorten this one to get it out in April so it will be rather meaningless if you haven't seen at least a few of her predecessors....can see all in order at Warlord of Noodles.
The basic idea is that the three No Evil Monkeys (hear no, see no, speak no evil) are spirits that can also be humans. They lost their three senses in battle with the Black Tezcatlipoca.