You call your girlfriend over asking her to hang out, and she agrees. You whisper "bust a nut" and hide the Boobs-in-a-Box™ away along with the Cock-in-a-Sock™ sock, with the cock remaining in your pocket. It doesn't work on you, so it must be female only.
May arrives and you tell her that you have something special to show her, which interests May. You explain everything to her, and May agrees to test it out. You set the cock on her lap and the next thing you know, May is male. May then asks you to put the boobs on as a favor for her testing this out, and you get her gist.
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