Breast Implants Lumpy

Has anyone ever tried smuggling drugs by using Breast Implants?
What cup size (volume) and realsitically what type of drug would net someone the most profit without getting caught? (not sure what cup size a breast has to be to weigh one kilo – 2.5lb)
I’m thinking that if someone tries a DD implant of black tar heroin, that it might be too heavy (per volume), and end up looking lumpy and unnatural…not to mention uncomfortable.
How about butt implants full of CRACK!!! LOL
Drug smuggling carries very severe penalities. I know because somebody in Jamaica presented me with a set of six large deep circular table mats as a souvenir gift. When I landed back in London, Customs found tiny bags of cocaine in each of the six table mats – total weight 35 ounces. I knew nothing about anything being inside the table mats but I was still convicted of importation and got an 11-years sentence despite the quantity being small and it being my very first brush with the law. Luckily I served only half of the 11 years before I got Parole.
Is it fair that this conviction means I can never again enter the US – if I fly into any US airport I will get turned back by US Immigration. I can never again see my friends in Brooklyn, NY or Inglewood, CA