The dartos muscle, from the testicles to the tip of the foreskin, expands or contracts according to the outside temperature.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
The dartos muscle, from the testicles to the tip of the foreskin, expands or contracts according to the outside temperature.
