Nipple erection

I enjoy nipple erection. Not making nipples hard, which happens by the way. But getting an erection when I play with my nipples. As soon as I start to lightly rub my nipples my cock starts to harden. As I continue it leads to a full erection. If I am horny enough I can orgasm with only touching my nipples. It is such an awesome experience. Would love to know if anyone else, man or woman, has experienced this .