OK, nobody can hear us!
Put your hand just like mine is, with one finger on either side of your cock and slide them up and down the shaft.
If she knew I was letting you even touch your cock, she would be so pissed off!
You know you are supposed to do something before you are allowed to stroke it don't you?
Come on, tell me what your "assignment" is. I know but it turns me on to hear you say what she is making you do!