I've never approved of you for my son-in-law, but when she invites me to join both of you at the beach for the day, I jump on the opportunity to get your help selecting the perfect bikini. I try on a few for you, tugging on the edges and giving you accidental peeks at my body. Then I notice you're getting hard and tease you a bit more. When I leave to try on clothes I see that you shrank. You're tiny and sitting on the edge of my bed, but I pretend not to notice. When I come back with the final swimsuit, you're tiny. You shrank out of your clothes exposing your little dick. I pick you up, make you finish the job, and call your future bride to let her know what kind of a jerk you are for "just leaving". I make you the luckiest tiny man of all. you'll get to explore my body and I'll keep you for myself as a sex toy.