I don't watch porn because nipples scare me....well female nipples that is.
I try watching Japanese porn (that includes hentai) only with the volume fully on to test my fortitude and mental resistance.....I can still only last like 2.5 minutes before going insane.
My last record was 4 minutes...okay, I lied it was 1.
Nipples are nipples on every human being.They look the same both on a man and a woman. It's weird that they freak you out though. xD
I tried to watch hentai again but I just can't,I close the tab after the first 30 seconds,not because of fright,but because I'm not mentally able to bear with them.