Close...The above post was a reference to a crazy oil commercial from Castrol, by the way. With a Scotsman and a golf club whacking people in the shins...
It was a dipstick that he was whacking people with. He'd whack them usually in the back of the legs as he yelled
"Think with your dipstick, Jimmy!".
This was circa 2009, I believe. It was a low point in motor oil marketing if there ever was one.