I catch my fat sister-in-law fingering herself in the shower...!!

They caught you Karla Lane, they caught you haha!! Besides, the one who caught you on top is your brother-in-law, so you must be dying of embarrassment, right? That a man catches you masturbating... the fact is that he must have thought it was okay and he liked it, I say this because in the end he ends up screwing you.