Orphan Morphin' 

The depraved, sick, and twisted act of adopting a child in order to groom them into a lover after they reach the age of 18.

That Woody Allen sure wrote the script on Orphan Morphin'

Orphan Morphin' by Ranchgirls December 12, 2020

morphin’ orphan

Slang for someone with no identifiable attachments to anyone and who is essentially a chameleon.

Although it seems he had a family at some point early on, that guy is a straight-up sociopath really, a morphin’ orphan!

morphin’ orphan by Dr Bunnygirl September 8, 2019