You can hint at the possibility of the universally accepted fact rape is common place in Zalanthas, even in a PC to PC situation, you just can't say, "Look, hand over your coins, it is rape time Honey."
Examples:
This is ok:
"Look'ere Darlin, ya' got ya' a nice supple look about ya'. Ya' also got ya' some nice coins in that pouch on yer' hip. I propose we go tha' coins route. Whatta' ya' say?"
This is acceptable because you never threatened them with rape. For all they know you meant they look mighty supple in terms of, "You sure look easy to cut with my knife." It is up to the victim to play that however they want so long as you as the aggressor never mentions rape or tries to physically force them sexually.
Now, are some people possibly going to submit complaints about that? Yes. But those are the sorts of people who really aren't thick skinned enough for Armageddon anyways, and the staff will deal with them.
Now, on an OOC level, we all know the overtone that was being presented there. But, no one was threatened with rape, however the victim can still see, "Wow, this guy is evil, he means business, he is as rotten as they come."
This is not ok:
"Look'ere Darlin, ya' got ya' a nice supple look about ya'. I'm gonna' rape ya' if ya' don' give me them coins. Whatta' ya' say?"
For obvious reasons, not acceptable.