Try to reverse the changes

Lu headed to the garage and walked over to his Mom's stockpile of diet Milkshakes. She had a large stack of the 12-pack cases along the wall, and every few weeks she'd always bring back more. Free samples from work, Lu had always figured. She reached for a case when she noticed there was a second flavor of Milkshake right beside it. Chocolate or Strawberry, it didn't really seem like an important choice, at first, but Lu stopped, since logic escaped out the window and didn't come back about half an hour ago the decision suddenly seemed weighted with arbitrary importance.

There was a possibility that, if these milkshakes did change her, that a different flavor may change her in a different way, possibly even change her back. She considered that if chocolate changed her, then maybe Strawberry would have a different effect if it did anything at all. Then again, since this doesn't make any sense, shouldn't the pink-colored strawberry milkshake have the girlifying effect..? Lu stood there for a moment, thinking deeply, before deciding on...