Chemistry (updated)

The teacher Mrs Harkin walked in and said "ok class today we're learning about rates of reactions. However as it is the school sex week I know that some of you may be otherwise occupied." I was familiar with the way the week worked. Anybody could have sex with anyone they wanted within the school. So I walked up to Carla and Imogen and pushed their heads together. They got the message and quickly started kissing.

Whilst they were snogging I felt up the breasts of both. Carla's were firm and C size which fit quite snugly on to her tall frame. Imogen's B size breaths were quite big for her small frame although it worked with her figure.

The girls finished snogging and whilst they were sitting back down I got out my dick and...