Well I could give you examples of some stuff I've gotten (even with my obvious 'no kink/fet art' rule) Stuff like being STUBBORN about characters being barefooted or having slime coming off of their faces stuff like that xD Basically when people get too specific on anything odd... it raises suspicions.
I feel your pain. I always come across someone that wants me to draw something like that, and from any other standpoint, it SEEMS innocent, but it's not. I wonder, would you have the right to say no in situations like this, if it came to be a ongoing problem? Like, from the same person?
It's not your fault...It's society. There are SO FEW things anymore that people don't relate to sex. I can name almost..like..20 words off the top of my head that people use as a dirty metaphor. NOT an exaggeration... .... Wait....22 words...I just saw a plug and an outlet...
Kevin have you ever looked into Soviet brainwashing technology from the 70's, I heard it's great for washing your mind, albeit with the side effect of you thinking your a Soviet soldier. Oh and to deter fetish artists, at cons, put a sign that says "Can't make fetish commissions due to technical difficulties" Trust me it works.