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@CostelloWilliam may be oral sex.. https://t.co/Sxq8XZXLtF
@CostelloWilliam may be oral sex.. https://t.co/Sxq8XZXLtF
Do Men and Women Perform #OralSex as Mate Retention Behavior? #TheEvolutionofSexuality http://t.co/k4KmOIEyY3
Do Men and Women Perform Oral Sex as Mate Retention Behavior? http://t.co/jIaKqmPtkh #springerlink