i had an argument with my younger sister and in short i called her a lazy stupid whore and that i would tell our parents that she borrowed their car and stole their money (she was being an ass) and she was silent aftwerwords. later that day i took a shower in this bathroom which could be entered thru my parents room or thru the hallway but thru my parents room you cant lock it. she came in opened the curtain, i tried to stop her but obviously i was naked. she grabbed my crotch and squeezed and i fell to the floor. i couldnt yell because of the pain. like a minute or two passed by and eventually i couldnt help but cry and ask for her to stop so she loosened her grip a bit & made me beg for mercy and apologize. she left with a threat