Newt is part illithid or other tentacle-y beast after some run in he had a few years ago.

OR

Maybe Newt has a tentacle heavy Animagus form?

OR Maybe I just want an excuse for tentacle porn AND/OR I want Lovecraftian horror tentacles that bend the mind like origami.

- In short- however and whyever:
Newt has Tentacles
They Drive ANY or MANY mad (either gibbering or horny or both)

If you can find it in you to give me Newt sexing someone up with his tentacles, I will be most happy.