I hear you yet again in the bathroom - you never did learn to masturbate quietly, did you?
You hear my footsteps and the creaky board in front of the bathroom door, and you call, rather breathlessly, "Come in, Daddy, it's not locked!"
Although I can't see your hands under the bath foam, it's obvious that you're wanking your cunt hard and fast. I do have a good view of your lovely big tits though: now that you're nineteen, they're firm and rounded like your beautiful arse, which of course I can't see at the moment. For such big breasts you have relatively small nipples - but only in diameter, they're already erect and long, as is my cock now.
You see the bulge and say "Show me your cock Daddy, then please play with my tits - I want to be slutty and for us both us to talk dirty!"
I strip off quickly and say, "So my dirty little slut girl likes to see Daddy's cock while she's wanking herself off?"
"Yes Daddy, I do, it turns me on!" you say, "I'm fucking my cunt with my left hand and wanking my clit with the right!"
I have one knee on the edge of the bath as I reach down and cup your heavy tits in my hands, so perfectly smooth, firm and rounded...
You have a perfect view of my hard cock, my tightened-up balls and my arse - you stretch your neck, but it's all out of reach for your mouth, so you relax your head again...
I gently squeeze and knead your tits, then stroke them in a circular movement from right underneath, where they join your chest, forwards until just short of your nipples, then back again, then forwards again...
Then with one finger of each hand circling around your nipples, spiraling in until I'm tickling your aureoles and then the sides of the nipples themselves, but not the tips of them...
In the last year, I've seen you wanking often enough to know from your face when you're about to orgasm, apart from which the bathwater is frothing as if a shoal of piranhas were frenziedly feasting on your fanny
"Please don't tease me any more Daddy! Please be hard with me, help your slutty daughter to cum!"
Your nipples are so fucking long now, I squeeze them harder and rub the tips of them, the palms of my hands still around your tits...
As you reach the point of no return, a few seconds before orgasm, I quickly go down with my head and take your left nipple in my mouth, my lips clamped around it, rolling it a little from side to side while my tongue licks the hard tip hard.