Have you heard of this one??
Speaking of piano tuners (bah dah dah),
that reminds me of the woman who lived deep in the mountains
and hired Oscar Opporknockity to make the day's travel
to tune her piano...
After spending the whole day in transit,
he finally arrived, tuned the piano, double checked everything and asked her several times to make SURE
it was right.
"Oh yes," she said...it's perfect.
So he travelled aaaall the way back,
only to receive a call from her the next day
to please return ... it just didn't sound
quite right.
"Sorry, m'am," he said.
"Opporknockity only tunes once."
My piano teacher told me that one a loooooong time ago (how long you ask.....) and I've always loved it!