Not much actually

He slid his hand in his shorts' pocket which has an obvious bulge, he pulls out two small red star-shaped papers that he's been carrying around for some reason.

Does he really expect me to...??, Wanda thought. But then something is better than nothing right?. Before she could say anything, he licked the back side of the two papers and bent towards Wanda's tits and proceeded to like each of her nipples nicely. Wanda gasped at the sudden stimulus. He sucked and wetted the nipples for a few more seconds and slammed the stickers to each nipple making her DD breasts wiggle vigorously.

The stickers were only big enough to cover her areolas, which means she's essentially naked except her nipples.

The boy leans in and kisses Wanda without giving her time to act. He uses his tongue to explore her mouth. He then gives her a clearly visible hickey, slaps her ass with a considerate amount of force, winks at her and walks away.

Wanda, long forgotten to hide her goods, took a few seconds to process what had just happened before snapping back to reality. But she was too late as the boy was nowhere to be seen.

There she is, standing at a strangers door step, completely naked except her nipples (covered by star shaped stickers).