So how does one have sex with an Aegislash?

I've seen people talk about they would, but how the fuck do you have sexual interactions with a ghostly sword and board?

My only thought as to how this would be possible would be the fact Aegislash can technically form a Shadow that can Physically interact with individuals (Shadow Sneak).

With this in mind, I'd imagine that people would envision Aegislash taking some sort of shadowy dark figure, similar to that of the person Aegislash once was as a warrior.
It would form it's outline in every detail, leaving before you a shadow man who would take you into his arms and enter you.
I'd imagine something similar for a female version.

Am I on to something or am I over thinking this?