Feed the elephant
An Irishman and his son went to the zoo.
A sign says, "Feed the elephant a bun to get your age."
The little boy gives the elephant a bun and it stamps it's foot 6 times.
"Wow" says the boy, "That's right, I am 6 years old. You have a go, Dad."
The Irish chap gives the elephant a bun.........
A moment later the elephant farts and stamps twice....
"Bejaysus that's right," said the father. "I am farty two."