Ah I see.
Then why didn't it just say that. Instead of Unnatural carnal copulation?
I know that unnatural has other definitions, but I think the definition in Wiktionary is funny when used to define sodomy:
unnatural (comparative more unnatural, superlative most unnatural)
- Not natural; supernatural or artificial.
So, supernatural or artificial...the military frowns on sex with ghosts or robots?