Water reduces friction. It totally does guys. Shrunk in an Amusement Park chapter 8 by Louka31

Lucky you. The water on the slide cut down the friction enough that you weren't peeled off her ass, left for the next person to go down the slide, but it couldn't stop her from crushing you all the way down. As she stepped out of the pool, you jiggled and shook along with her butt. "How come nobody's looking at her butt?" you grumpily ask yourself. It stinks for you that she had a wedgie when she went down the slide so you were actually fused to her skin. Your luck worsened as she picked her bikini out of her crack (it had almost been turned into a thong) and the pink fabric covered you. Now the only way someone would see you was if she went to sit on somebody's face they might see a tiny flattened foot sticking out of her bikini. Anything short of that however, you would be undetectable. Her walking isn't helping you any. Not only is that making you rotate but with each footfall her ass shook like a little kid watching a horror movie.

Since you had to at least TRY to breathe (it's an instinct) she must've felt your efforts and these caused her some irritation. She reached into her bikini bottom and dug at you harshly with her nails. This hurt more than words can describe but as she was pulling her hand away she happened to get a nail in between you and her. Since she was pulling her hand up this had the effect of peeling you off her skin and flipping you around. You were still flatter than a piece of paper and still insider her bikini but you were no longer stuck to her ass. If she were to keep walking you might fall out or be able to reform. However, if she sat down again you would most likely be plastered to her rump again and have your hopes dashed again.