Your girlfriend Claudia turns to you in bed one night and says she has heard something interesting about the new bodybuilding supplement you have been taking. Apparently it does something weird to your cum, where the growth-assisting properties carry over into it but become more targeted. Basically, if you cum in her – or better yet, if she swallows your load – in theory it’ll make her boobs grow. You can see how horny the idea makes Claudia. She loves huge tits, and she knows you love them too. Besides, it isn’t like getting a blowjob every night for a week sounds like too much of a hardship, so you agree to give it a go and see if you can make her tits swell and expand.