Year 12 Physics class....mmmm.

Year 12 Physics class....mmmm. The only girl in a class of guys, luckily I had my boyfriend there to keep an eye on me.
My most memorable class started after a morning where my boyfriend had been teasing me incessantly. We settled into our usually seats and the teacher started the lesson. I started slowly stroking my boys leg, innocently tracing patterns with my nails. Working my way high and higher until I briefly brushed his hardening cock.
He looked at me shocked but I brushed against him a bit firmer and smiled. He shook his head as the teacher continued to talk and ask the class questions. With a glint in my eye I purposely rubbed him a little harder, purposely. He couldn’t stop me without attracting the attention of the class so I slid my hand inside his waist band.
I gently gripped his shaft and used my finger tip to gently rub the precum around his head moistly. Gripping and releasing and then sliding, twisting, slowly and discreetly. I had him squirming in his seat quite quickly and the teacher kept asking why he was so distracted, going out of his way to through questions in his direction.
Eventually I had him right on the edge, so when the teacher turned I picked up the pace before extracting my hand from his pants just in time for him to blow. In the excitement of the moment he fell crashing off his stool drawing everyone’s attention much to my amusement. He spent the rest of the lesson trying to focus and then had to make a quick dash to clean up before the next period.