A doctor heard a funny noise coming from his water heater and called the plumber.
The plumber listened for a few moments, pulled out a hammer and gave it 2 light taps.
“It’s fixed,” he says and hand the doctor an invoice.
“$150 the doctor screams? You were here 10 minutes – that’s $900 an hour. I’m a doctor and I only make a 3rd of that.”
The plumber said,” Y...