I think there is a mysterious and undiscovered use for mens nipples. I'll let you know if I find out.
I often ask that question and I have to agree, It's purely sexual. Sadly mine have never opened or got me any beers.
Wait, so male nipples are not used as a visual tool while they jerk themselves off...? Boy, was I way off...
HAha, not a visual tool no, but I do use mine to type out instuctions when I'm banging one out during a 'private show'.:leaving:
Hahaha... I want to see some fitz nipples--well, wait, nevermind I only look at non-human nipples in a sexual way.. sorry...
fetuses do not all start out with two x's. they either get an x or a y at conception from the father. The reason men have nipples is because of the one x that they have.