The bassist who told me that joke died last year, stuck upside-down in a sewer manhole on the corner where I lived, at the time.
The police who were looking for his wallet, after a theft, went to interview some storeowners,
and he impatiently went diving for his Canadian Tire money. His weight and bad health did him in.
He played a '62 Fender Jazz Bass with a finger guide, palm rest, adjustable mute and removable stand for playing upright.
If that explains anything.