A guy's nipples can become hard for several reasons, primarily due to physiological responses such as cold temperatures or arousal. When exposed to cold, the body constricts blood vessels, which can cause the nipples to become erect. Arousal triggers hormonal changes that can also lead to nipple hardness. Additionally, stimulation or physical touch can elicit a similar response.
for correct identification.....u know how dumb guys are
That is a very good thing because guys love girls with big nipples...it gives them more to suck on...lol
no im a guy and i hate it when girls play hard to get it makes guys feel like there unloved but that's the fun of it! girls love to make guys feel unloved
no
Nipples.
Not to me, it just makes them look like they're trying to hard to impress someone.
niples
Me and Master Niples.
an elephant...
it depends.
As hard as you can because some guys like to get hit there.
I am a women and personally, If u don't do it that hard, I like it. I dont know about other women. If you are gonna bite her niples, please be gentle!