Your cute and sweet bubbly friend is over to hang out. She is wearing just her bra and panties, because like, she feels so comfortable with you. She starts to talk about her new bra which gives her huge cleavage, and you suggest helping her test out what it would look like in different outfits. “Should we do a jiggle test?”, she asks. “That way like I could know the intensity of jiggle in my clothes. You’re so smart and creative, I love it!” You tell her to begin moving her chest up and down slightly at first, and she gladly does so. She continues to chat with you about different things, in that cute, sweet way she always does. “I can’t tell if it’s jiggling. I don’t have your eyes, you know, so I am not sure.” You tell her to increase the speed and she smiles as she does. Then you tell her to really start bouncing. Her tits are bouncing so much your dick is rock hard. She giggles and says, “Weeee! This is so much fun!” Afterwards, she thanks you for your help and says she wants to do this again when she gets another bra. She genuinely has no idea how rock hard she just made your cock.