I really need butt augmentation,since I have no fats I want to go with butt implants.are they heavy? does it feel funny? i currently wear silicone butt and it's pretty heavy like think like 2000cc.does it giggle like normal butt and feel real during sex? can my partner know its not real? i am a hip hop dancer will it affect me? how long can it stay in? what silicone is best to use? i have gummy nears 400cc in my breast.