Deep throat

Lucy still isn't taking you very deeply into her mouth, it still feels amazing but you've always wanted to try a deep throat. You slide your hand through her hair until it rests on the back of her head, before pulling her down the length of your cock. She gags instantly and tries to push away, but you hold your cock inside of her. You can feel the tip's down inside of her throat slightly and Lucy's eyes are wide as she stares up at you. Just as you're about to start thrusting inside of her mouth they suddenly close, before opening wide again. This time they look slightly less robotic.

And she bites.