Though I never had sex with him, my ultra creepy ex (who I had no idea was so sick/rude/creepy when we started dating) was really into diapers. I'm not offended by them but I definitely don't want that in the bedroom, there's no way he could convince me to wear one (or even see him in one). Though the diapers were the least of the fetishes he had... that's the only one he brought up to my face.
The gun thing is sort of like public sex, the fear of getting caught is exciting, in that case, the thought of getting shot is exciting. It makes sense, I have no interest in it personally but I'd imagine for someone into that it would be intense!
Since there is a lot on my list, I'll just stick to what I have been asked and said No. I had a guy I was seeing asking me to put my finger in his....that just totally grossed me out, not my thing, I said NO. Also no to asking about using my beaded necklace with different sized beads as an anal toy on me. NO, yuck, besides, I don't do anal. I had another guy ask if he could choke me, needless to say I got the hell out of there and that was an end to me seeing that guy again.