Rarity's been hinting about a surprise all week, and now that the weekend is finally here, Rainbow can't wait to go to her marefriend's house and see what all the excitement is about. But no matter what she had thought she was getting herself into, she certainly wasn't prepared for what would happen to her the day after... or that she'd enjoy it so much.

Contains: Rainbow Dash getting transformed into Rarity's giant honkers with a side of minor lactation.

Editing by SolidFire