Nope, not kidding. It's called a medport. It doesn't actually inject me with anything but it provide a direct access to my heart for injecting my cancer meds and drawing blood. Initially I didn't want to get it, but chemo is some nasty stuff, and if you do a normal IV on it through a vein in your arm eventually the corrossive power of the chemo itself will collapse the vein, basically eating it away until it breaks open. For chemo, this is bad news, because many of the forms they give you are corrosive to your skin as well. So if the vein collapses and it spills out onto your skin it will quickly eat away the other skin, often necessitating skin grafts and the like. One of the treatments I signed up for (but didn't get unfortunately) actually used a liquid form of Mustard Gas as part of the treatment process. The new treatment I'm coming up on I will have a direct injection process, but it's external. They hook up a full time line to the medport, then I'll carry around an external infuser on a belt pouch. Just slap in a different medpack and you get different juice.
I've got a good friend who in the last 3 years has had a port, an internal defibrillator, and a new hip put in. We're not sure whether to call him the Six Million Dollar Man or the Man of Steel. The port's made his life a lot easier--he's a sickler with really bad veins, so medication, transfusions, and drawing blood have become much less of a hassle. Once took a nurse 3 hours to get an I.V. into him, which is about as much fun as it sounds like; now, such things are pretty routine.
Something like a vein port as described in Liet's post above? Only if medically necessary. Anything electronic that serves no medical purpose at all? Hell, no. Okay, let me ask ya this: What do you do when a third of your brain crashes? What if you get yourself a RoboCock and then download a pr0n dream... but it comes with spyware that makes yer cock tap out commercial jingles for online casinos? Nah. Fuck that. The only thing I might consider replacing would be the left eye, since the optic nerve damage in that eye is non-correctable. They find a way to rewire or replace optic nerve, I'd go for that.
