It was dark, I was young and I was somewhere secluded and comfortable with a heretofore friendly young lady. The moonlight was very flattering to her skin tones. Romantic that I was, I sought words to capture the scene.
And what came out was "you look better in the dark". With charm like that, who needs contraception?
But we all foul up that way once in a while - even professionals. Woundwort offers examples