Lavender gonna get some urges

Hermione decided that she wanted to try out some of the new spells on Lavender. With a quick flick of her wand and the blonde witch started to lick her lips as she suddenly felt the taste of something salty. A second later she blushed as she realized that she felt the urge to suck some cock. And while she tried to push down the thoughts, it just kept making her more and more horny.

The class had just ended and at this point Lavender was sliding around on her place, her pussy dripping and her mouth dry as if she hadn't had any liquid for days. Just as they walked out, Hermione cast another spell, which would grow Lavender's tongue significantly. Then she waited for how Lavender stood there, looking around in need.

A moment later Dean Thomas squeezed past her and Lavender's eyes fell onto the fellow Gryffindor before she quickly rushed over and pulled him into the boys' bathroom nearby. Hermione enjoyed his surprised face and was grinning, knowing that Lavender would feel rather embarrassed blowing him off in the bathroom.

When the next morning class came, Dean had a wide grin on his face and Lavender seemed to be much smaller in her place, trying to avoid thinking about how much she enjoyed sucking him off. Gladly her tongue, which had been much longer than she remembered, seemed to have shrunken back, something she kept checking all few minutes. The class quickly moved past and Hermione used the time again to check out the spellbook. She noticed that the few spells she had used on Lavender had drained the power to around 40%. The magic stored in the book seemed to drain really quickly, making her wonder if they had to charge it again soon.

Time passed quickly and everyone headed for lunch. Hermione didn't spot Luna around so she quickly finished food and then went to the bathroom, wondering what her friend was up to.