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when the areolae on breasts begin to become aroused, they often get goose bumps which makes them look like they are covered in pebbles as they start to harden and tighten.
When watching Supernatural, Lilly could always gauge how excited Dean made her by lifting her shirt collar and glancing down to see how much her nipples were pebbling.
by ljpenpusher February 04, 2017
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