The tissue on the scrotum and the penis is a very pliable erectile tissue, like the tissue on nipples, designed so it can move.
When a man gets cold, his testicles and penis often get pulled close to the body to maintain warmth.
Sometimes the penis and testicles are pulled so close, it appears they’re in danger of disappearing into the body.
But don’t panic.
When the body warms again, they return to normal in a more dropped position.