We have this device that allows us to scan living beings and then make exact duplicates of them in the lab. Not just clones, they are identical in all aspects: Appearance, memories, personality, everything.

What I use in my free time is a malfunctioning hand held prototype that I grabbed away. While it still copies the subjects physiology and even their deep learned reflex skills, like bike riding, martial arts or languages, their higher memories are lost. Complete amnesia.

Now what do you think I do with perfect copies of beautiful girls, after hours, who don't remember who they are?