Prepare a dose of Upgra-D

After unpacking and laying out your haul once again, you sit on your bed considering what to do next. Just then, an image forces its way into your mind: your sister Julie, kneeling naked before you, pleasuring your throbbing cock and ****-enhanced balls. Her tits are bigger than before... Bigger than her head.

As you groan and begin to get hard, another woman joins your fantasy: this time it's your mother Christine, shoving her daughter aside to get a piece of the action. She's bustier as well, more so than even Julie; her natural yet unrealistically perky breasts bounce up and down as she sucks you off.

Coming back to your senses, you lean forward and grab a bottle. Time to make that dream a reality.

A few minutes later you're back in the kitchen, pouring powder out of the container labeled "Upgra-D." It's tumbling into a pitcher of grapefruit juice, dissolving as soon as it hits the pink liquid. Mom and Sis love the stuff while you and Dad can't stand it, so it's the perfect way to deliver the experimental breast expansion ****.

This should be enough... Wait, no, they're not going to drink the whole pitcher! Better use more.

While you keep pouring, you imagine your mother and sister having breakfast, each with a tall glass of juice. As they drink their fill, their tops are getting tighter. Your sister's pops a button, which goes flying across the room... Then another, and another, then Mom's blouse rips wide open, revealing her breasts: they're absolutely huge, and getting bigger with every passing second.

"Mmm--Uh!" You snap back to reality when you feel something bump against your crotch. Looking down, you see that your cock has gotten rock-hard and slipped out of your fly, its swollen tip rubbing against the kitchen counter. That should be uncomfortable, but with all the SpermiZan coursing through your veins, it feels good... TOO good. You feel your balls churning once again; if you don't do something fast, you're going to blow another load. You try to tuck it away, but when your fingers wrap around your shaft, that small bit of stimulation pushes you over the edge.

"Uuungh," you moan, spurting a thick rope of cum onto the side of the counter. Thinking quickly, you open the cupboard under the sink and aim your member at the garbage can. The rest of the jizz pumps safely into it, and when you're finally done you take a step back--

--And realize that all this time, you've still been pouring Upgra-D powder into the grapefruit juice. The plastic tub in your left hand is empty now, and the juice has turned a lighter shade of pink.

You stare at the pitcher for a few seconds, the Upgra-D tub in one hand and your half-hard dick in the other.

Oh, fuck. That's definitely too much... Should I throw it out, or water it down, or what?