Can't solve it, too itchy

Sweat was pouring down Lauren's body. She nibbled her lip nervously. What the hell was this math problem? She couldn't even read it!

"We're waiting Lauren." Mr. Marshall said impatiently.

Lauren nervously squirmed, unwittingly giving her bare ass a jiggle to the crowd. She stared up at the problem, praying it to become clear. Unwittingly her hands had gone to her chest and crotch and were scratching at her crotch and chest instead of just covering them.

"Having trouble?" The teacher asked, raising an eyebrow.

"I... I don't know!" Lauren turned to him, feeling utterly confused and lost. Her hands were now aggressively scratching her privates and the whole class could see.

"Lauren, what is going on? And why are you scratching yourself like that?"

"I... I don't know!!" Lauren moaned, unable to stop itching.

"Maybe it's because those are poison oak leaves?" A helpful student pointed out.

"WHAT!?! POISON OAK!?" Lauren shrieked.

She was incredibly allergic to poison oak. When she looked down and saw he was right, she panicked. With a cry and a spastic thrash Lauren ripped the leaves off her bare body... and exposed her naked figure to the whole class!