I'm from being out at a party. My 18 year old younger step-brother comes in with a camera and films me with the intent to mess around with me. He notices that I'm cold by lifting my arms up an watching them drop to the ground. He grabs my boob and gropes me, then lifts my dress getting an upskirt view at my panties, then pulls my panties down, peeking at my hairy bush. He takes my hand and uses it to jerk himself off until he cums in my hand. When he's done he takes off leaving me there .