Captain Norman, a retired old seafarer, decides to relive the glory days by donning his vintage naval uniform and taking a stroll down by the harbor. Feeling adventurous, he hires a lady of the night for a private rendezvous and follows her to her place.

Doing his best to impress despite the years behind him, Norman gives it his all. Midway through, with a bit of doubt creeping in, he pauses and asks, “So… how am I doing?”
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With a silky voice and a smirk, the woman answers, “Captain, if I had to measure it… I’d say you’re cruising at about three knots.”
He looks puzzled. “Three knots? What do you mean by that?”
She smiles and replies, “You’re knot firm, you’re knot in, and you’re knot getting a refund.”
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