Of mathematical limericks

Graham has posted a very clever - far too clever for me - mathematical limerick on his blog. I thought the limerick would be something like this:

A man from the island of Skye
Bad at maths, but determined to try,
Realised all of his fears -
After forty-five years
He still can't tell his log from his pi.

How wrong can you be 😩

Feel free to have a go yourself - either kind will be welcome!