She plays a game

"How about a little game?" Lydia asks the two of you, while taking off her clothes until she only wore a black bra and panties.
"I'll offer you both some satisfaction..." she crouches down in front of you and lets her hands run over your thighs towards the cages, "And whoever doesn't cum will have some fun with me."

You refrain from asking what this fun would look like, you feel like you wouldnt like the answer anyway.

So you and John remain silent while Lydia slowly removes the key from her chain and then goes to her closet and gets another one out of a small safe.

She uses the keys to skillfully open both the chastity devices and lays them o the floor. then she stands up again.

"Go on." She says sternly. "Get hard for me."

Because of the pent-up frustration, it only takes the sight of Livia and the current situation for both of your dicks to harden, first slowly, and then more quickly.

a quick glance to your right confirms for you that John is indeed a good bit smaller than you, maybe a bit below average.

“Okay, thats good” Lydia says, leaning down to both of you. Then she slowly places her hands on both of your dicks. "Let's get started."

She rhythmically begins to give both of you a handjob at the same speed, sometimes going faster, sometimes going slower.

After just a minute she says, "As a little incentive...the winner gets to fuck me."

She becomes faster. "Imagine...finally pushing into a pussy again, no matter if deep," she squeezes your dick a little harder, "Or less deep," then John's.

You feel yourself approaching orgasm and only hope thatJohn feels the same way.