MLP FIM: Fledgling Emporium

Rarity's rear was facing the door, her tail lifted into the air. Spike blushed as he sees the back of the diaper sag and get lumpy turning a light brown as well.

"Eeep, S-spike what are doing here?" She blushed as she still going.

Spike coudln't take his eyes off her as he scuffed his feet across the floor. "I just heard you and thought I'd come and see."

"O-oh I see, well I suppose it's my fault for not locking the door."

What should Spike do next?"