"Like, what's just happened?" - You've said, after using the tube - "OMG I, like, can't remember my name" - Then it struck you, all the memories, bimbo thoughts and various other things, that only a ditz would think about flow into your brain, also changing your body a bit, making your breasts grow a cup, your ass expands a little and you lose most of the body fat. "How could I forget? I'm, like Cindy and I'm the prettiest girl in the school!". - After that, she threw away the flashlight, she was suprised, why would such a popular girl like her carry some junk like that?
A few weeks goes by and Cindy uses about a fourth of the tube, there's a class trip organized in her school and she forgotten to take the Ditz Stick with her, luckliy, she had another lipstick, an emergency one. After three days she comes back from the trip, but her mind has cleared out almost completley - "Whoa, that was really weird. I couldn't think at all! And thought my name is... Cindy?! Ehh... Gross. Now it's time to come back to my standard life, I guess..." - She said, not remembering about the flashlight
But after some time she realises - "Maaan, life is boring, this shit goes in a circle, wake up, eat, learn, go to sleep... If only I could take all this weight out of my shoulders. WAIT!" - She remebered about the Ditz Stick, and read a note attached to it <If a girl (or a boy) uses up the whole tube she'll become a bimbo forever> - "That's a though decision, maybe I'll just buy more of it and spend some time as a ditz, some time as me?" - So she looked at the price tag - "$249.99! Screw this! Bimbos have it easier! No more learning! No more waking up at 5:30 a.m.! No more being stressed about getting a B from a test! Just shopping, boys, being pretty, makeup and whatever else bimboes do!" - So she's gone on to apply the Ditz Stick, when she did, suddenly she felt light-headed - "Wow, this feels as awsome, as I remembered!" - She felt thoughts flowing away from her brain with every second, up to the point she's forgotten any math above 1st grade - "I, like, can't remember anything! What's, like 12 * 3, twenty-one?" - This felt so good, imagine all of your bad feelings going away, replaced with bliss. Then her breasts and ass started to expand, just like the last time "Mmmhhh, have my boobies, like, grown bigger? They totally did! *giggle*. Selfie!" At the end, all of the memories of her old life dissapered and were repleced with Cindy's ones. In addition to that, she had the desire to use Ditz Stick hard coded into her small brain.
"Like, let's go shopping! *giggle* I'll call other friends!"