Yes - you let her ride you

You grunt and nod, and she gently guides you such that Phoebe is kneeling above you. Your huge cock is big enough that even when she's kneeling as high as she can, she's still touching your cock. She looks into your eyes, the fear in her eyes evident, but... do you detect a hint of lust?

She seems to hesitate and you begin to feel impatient, but as you try and thrust upwards she drops herself onto your cock, letting the head enter her snatch. You groan, remembering your father's comments the previous night - indeed her tight cunt is squeezing your cock painfully. She sees the pain on your face and drops down further, letting a couple of inches into her. Her legs are shuddering, clearly struggling to hold her weight.

The tight warmth around your cock is amazing. Nothing like you'd experienced in your own body. You want more. No, you need more.