Do You Know

"Having lunch one day, a sex therapist said to her friend,
'According to a survey we just completed,
ninety percent of all people masturbate in the shower. Only ten percent of them sing.'
'Really?'
The therapist nodded. 'And do you know what song they sing?'
The friend shook her head.
The therapist said, 'I didn't think so.'"
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