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* The question was phrased by the source as follows: "In your life, have you engaged in anal penetration?"

The source adds the following information: "To men who have had sexual intercourse with a woman: your penis has penetrated your partner's anus.
To men who have only had sexual intercourse with men: you have engaged in anal penetration.
To women who have had relations with a man: your partner has penetrated your anus with his penis.
To women who have only had sexual intercourse with women: your partner has penetrated your anus with an object or with her fingers."