Nostrils? Really?

A while back, Sir and I were playing. He had my wrists bound together, and I was lying across the foot of the bed with the rope binding my wrists tied to one of the feet of the bed. He was standing at the foot of the bed, generally enjoying torturing me (you know, pinching, tickling, biting and, his favorite, bringing me to the brink of orgasm and then denying me). After a while, he let me cum...hard...and then grabbed me by the hair and shoved his dick down my throat. Now all of this is pretty standard fare for us, we both enjoy it, until he reached his climax. He pulled out of my mouth and came all over my face. Again, nothing unusual there, except that my head was sort of on a downhill slope, so when he came on my face, his semen rolled down and sort of blocked my nostrils. I must've gotten a slightly panicked look on my face (even though I could've just opened my mouth...but I was apparently in idiot mode that day) because he sort of laughed and wiped it away from my nose so I could breathe. Then we laid there on the bed giggling about it. He thought it was hilarious, so he created a new fetish on fetlife called "cumming in her nostrils" and made us both join. I thought that was the end of it, but then we had another member join. At that point I'm thinking...really? The idea of doing that...on purpose!...really turns someone on? But hey, I may be new to the BDSM world, but one thing I have figured out is that no matter what freaky thing you can dream up, there's always someone out there who will be into it. So, live and let live. I'm sure half the crap that turns me on would give my mom a stroke, so who am I to talk.