You outlast her! (Requires 95% Purity)

This stopped being about the eggs long ago. Their stimulation is intense, but still, you were both of the same playing field there. This was about skill and dedication. Being as not dirty as you are, you don't have enough experience in this department to comprise skill -- but you're dedicated! Delilah's mean, and a bully, a dirty. You can't let her win. You won't let her win!

Powering through her fingers, you work your own into hers. For a few moments, you feel nothing at all -- your zealous passion for not being dirty overtaking your nervous system -- and it is during those moments that you deliver the killing blow, rubbing her so precisely and with such effort that her egg slips all the way inside of her. Still covered in an airtight layer of pocket fabric, the egg slips fully inside of her -- she squeaks, and from that moment on you can fully focus on defending your own crotch from her hands until she cums. But it doesn't take that long.

With the vibrating egg fully inside of her, clad in the slightly-rough pocket material and pressing through her apparently flexible panties, she can't last. She stands up, getting off of you, and takes several steps away, as if to escape you, before the vibrations and shaking and pleasure make her lower body give out. Falling to her knees, hands digging at the outside of her pants, but unable to pull the egg back out wrapped in pocket and panties as it was, she cums. Hard. Loud. Everywhere.

Her head looks up to the roof, and then her eyes look up to the inside of her head, and her limp body collapses forward, face-first onto the carpet. Professor Phoebe applauds loudly.

You won!