you're sitting beside your sister watching a spring break movie & the girls in bikinis got you all turned on. You unzip your pants under your throw blanket & think you can get away with having a quick jerk but your sister spots you and quickly throws off your blanket to reveal you jacking your wittle wee wee with your thumb & forefinger! LOL. she's like "What the fuck?" and then she looks closer to see your teeny cock! OMFG she had NO CLUE her brother has such a tiny little dick! She quickly grabs her phone & snaps a pic of this madness. She laughs and mocks you but you can't stop jerking it with your thumb & forefinger... you just can't stop until