The man was undressing the woman gradually, peeling her layer of clothing, piece by piece. They were kissing amorously and unaware of anything around them. I squinted over the keyhole to get a larger view of the scene. Their lips were glued to each other and the man’s fingers were busy on the mound between her thighs. The woman was moaning delightedly and was making funny unintelligible noises. My patch watered as I felt my nipples harden and my breath quicken.

Suddenly, there was a stinging ...