Katie then picks up the Formula-R can and run to her friend.
"I'm sorry for what I said Tiff, shouldn't treat you like that".
Tiff said with a hurt look
"Yeah, you shouldn't".
Katie says
"I know how to correct this" And takes a sip from the Formula-R. Immediatly she felt her stomach hurts, holding it with both hands. 'It's for Tiff', she thought while the changes take place.
Tiff watched shocked and amazed as Katie's body become more muscular, growing so much it shreddrer her clothes, leaving her naked. Body hair thickening into a fur coat, eyebrows fusing into an unibrow while her face becomes more primitive, like a cross between human and ape. In just a few minutes, in Katie's place was a second cavewoman.
Approaching her now devolved friend, Tiff asked
"Katie, how did you do that? You became a neanderthal"!
With a puzzled look on her face, Katie retorts
"Become, what are you talking about Tiff? I've always been a neanderthal, you should now that since your my friend, and the only other cavewoman in the neighborhood. Are you feeling well"?
Tiff was speechless. Her childhood friend devolved in front of her, and suddenly acts like she has been born a neanderthal like her. 'It's that strange can she drinked' she realized.
Tiff then face Katie again and...