pushing it

"Jenny, close your eyes and try your best to bring yourself to orgasm and don't let anything or anyone stop you," John whispered.

Jenny, still terrified about being discovered naked below the waist and masturbating in class, shut her eyes and started fingering herself deeper and fasters.

"Good, now use your other hand to play with your nipples."

Jenny slid her left hand up her shirt and pushed a bra cup up so she could massage and tweak her nipple.

Even though they were in the back corner of class, and Jenny had an empty desk on the other side of her, John knew it was a matter of time before someone noticed what she was doing, but would she orgasm before or after?