get a bra about two sizes two small and do what i did. it was a lot of fun for me but my pet screamed like a bitch. you take the bra and put it on then you well i made mine but im sure you can find some those tings in racing movies that pop tires when you drop then behind the car i made thosse and thay werre about as small as your pinky nail you take those and put about a hand full spaced oout into the bra and have them do junping jacks or jump roap it is really fun to wach becuse the sstickers nip into the ckinn and if thay have bug tits the junping causes them to bounce and causese extream pain