It was a one-way, snap-off hex bolt. Her nervous looks delighted him.
Silly girls like her needed to stop offering to do ‘anything’ to cum.
But that wasn’t the best bit.
The best bit was the look in her eyes after he’d made her cum, over, and over. When the horniness had gone, but the collar remained.
When she really thought about just how she was going to explain it to friends and family when she got home.