A diaper!

The woman went behind the counter as Lauren cupped her crotch and hunched over.

"There was something a family forgot here..." The woman searched behind the counter. "...AH! Here it is!"

She then pulled out a big plastic baggie. Lauren was confused. What could she wear that came in a bag like that? Then she saw the label and her jaw dropped.

"Diapers! You're giving me... A diaper?!" Lauren yelped, the color draining from her pink face. The people nearby giggled at her loud comment.

"Well, yeah." The woman said, drawing out a diaper from the bag. It was a white diaper with balloons and ponies on it!

"No way!" Lauren yelped. "I'm not wearing that!"

"Well, I can't let you skate around naked..." The woman said. "So actually yeah, you are wearing this!"