As a kid I was also completely turned on by shatner in star trek,but as an adult I began to notice the bulge always looked the same,same position,same size,always the same,so I began to think it was apparently some type of stuffing by either him or the studio. But then I got Netflix and it has all the seasons of star trek on it and it does seem that the bulge does indeed change from time to time and even in some rare shots you can make out the shaft. So now I think it was definitely all him in which case ol billy boy was definitely packin.