Nipicist
One who takes great pleasure in checking or obsessing over their nipples.
Person 1: Ronny man, you're such a freaking nipicist. You're always playing with your nipples in the mirror!
Person 2: Well bro, when your nipples look this good it's hard not to pay attention to them! I guess I am a nipicist!
Person 2: Well bro, when your nipples look this good it's hard not to pay attention to them! I guess I am a nipicist!