Yes it is true. Personally when I am having sex with my husband, and he kisses, sucks, and licks my neck, my nipples get hard.
Just like what someone else said in this Discussion, its the same as the goosebump effect.
When something feels good, or tickles you, certain muscles in your skin start to tense, thats why hair stands up, and nipple skin contracts.
Just like what someone else said in this Discussion, its the same as the goosebump effect.
When something feels good, or tickles you, certain muscles in your skin start to tense, thats why hair stands up, and nipple skin contracts.
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