With her panties!

"Take off your panties, Sarah..." You tell her in a gentle tone, smiling as an idea comes to your mind, making her gasp in surprise and press her back and palms even harder against the wall. "Or should I do it for you...?"

"I really will scream if you try that!" She threatens, her eyes wide in bewilderment as you caress her thighs upwards with both hands and lifting the hem of her skirt as you go.

Still smiling you lean in to her face again, pressing your lips to hers at the same moment as your hands reach her hips and grab the waistband of her underwear! Without any further delay, you then proceed to pull and wriggle the garment downwards, having to press yourself even closer against the girl's undulating chest to reach all the way to her knees!

Keeping your eyes locked with hers you pull away again and slowly get down on one knee before her, watchful of any signs of screaming...

No such signs are to be found, even though she's still having that nervous look on her face, and she doesn't try to fight back as you gently lift first one and then the other of her legs to have her step out of her underwear...

Standing back up again, you take a first look on what you've captured in your hand. A thong would've been an interesting find, but the plain white panties that you're holding seem much more fitting on a girl like Sarah, and it also serves your purposes much better... Much to your joy and fascination, you also find a noteable dampness at the crotch of the small garment!

While getting back up, you carefully fold your trophy into a small ball, with it's insides out, and hold it in one hand while once again leaning in to kiss Sarah's lips, this time also groping her butt through the soft material of her skirt...

"What...?" She mumbles as you break the kiss and hold her panties up between your faces.

Responding with a gentle smile while smelling her dampness, you hold the garment closet to her. "Open your mouth..." You tell her in a gentle whisper, seeing her eyes grow even wider!

She hesitates for a few moments, licking her lips nervously before taking a deep breath...

You're not quite sure what her intention is, but as soon as she open her lips to start say something you quickly press her damp and rolled up underwear right into her mouth, following up by gently grabbing her jaw and closing it while pressing your own lips to hers!

"Mmmf...!" She grunts, staring back at you but otherwise making no move to fight back!