step-Brother step-Sister PJ Jerk Off Instruction

I show my step-Brother my new pyjamas and quickly notice that he has developed an instant hard on!! Oh my goodness... but... I'm your step-sister?! What if someone walks in and sees you like this?? No, we have to do something to get rid of it before we get caught!! I know, I'll tell you what to do and you do it, come on step-Brother.. follow my instructions ;)