The shrinking formula, despite the looks and smell, tastes like orange juice. With that thought firmly in hand you decide to chug it all, just to get the maximum experience you can out of this. After a long pull on the beaker you slam it down in front of you and smile like you'd just won a drinking contest, and Tiffany nods in approval.
"That was very good Mr. Mars- I mean Steve. Not many people like to chug it all down at once like that," she tells you. You look at her and wonder if this really is all some kind of joke, as you don't feel anything happening to you.
"So how long until it...Oh boy," you say as you stand up, and then notice that Tiffany, even sitting, is now a foot taller than you are standing.
"It's an immediate process. I suggest you get onto the table and take off your clothes. I put some ones your size on it, though I admit some of the customers tell me later that they didn't wear them, and I didn't notice," she tells you, turning away to avoid embarrassing you. You wonder why considering you should probably be embarrassed for doing this at all, but shrug it off and begin to take off your clothes, which are beginning to feel like circus tents.
A few more minutes pass, and when you're down to a size you think it can take you climb onto the table, which is actually quite difficult because it keeps getting larger, but you manage it, and now stand atop your coffee table, looking around your house.
When you were a kid your father once took you to an aircraft hanger in an airforce base, where they kept the huge transport jets that carried supplies. Your house, which had always felt kind of small to you, is now even bigger than those, and you gaze around in awe before your eyes fall on Tiffany. You can't believe how big she is. It's like looking at mountain and watching it as it breathes. At this size she could do just about anything to you and you wouldn't be able to stop her.
You continue to stare as things continue to get bigger, and then you begin to feel a slight breeze, and realize that you're still nude, though at this size you doubt anyone could tell without a microscope. Looking around you see the little dots from earlier, and you find that you were right, they were clothes. Now you have another choice, put on the clothes she provided, or do this without.