This technique allows me to wear almost anything and have the proper feminine shape down there.
If you don't tape and hold the penis back, it moves forward, creating an unnatural frontal curve.
If you don't push the head back behind the ring of tape, the head is revealed between your butt cheeks. You cannot wear bikini bottoms and get them wet. This will definitely show!
The tape in front pulls the skin tight enough to smooth out the two lumps that appear where the boys are tucked. It also keeps 'the boys' securely as deep as they can be, and they don't shift which can be uncomfortable.
Like I said, this is not required for everything. If the panties work fine for you. Great. I go that rout at times. Still, at least holding the loose skin will keep it from migrating to places where it can bet pinched or chaffed.
That's fine. What about thong bikini bottoms? I bought some size 24 and 26 nylon competition swimwear. These are children's sizes since they are sized for the chest measurement. I cut the bottoms off and just wear that part. Talk about super firm.... Anyway, probably the same thing. I tie a triangle in the back to make it a thong back. Something like this is fine for skirts or pants. Not for under spandex, swimsuits, teddies, etc. Still, I tape the loose skin out of the way. I don't want it to get pinched in the leg opening! Did that once, taped ever since. Hurts like hell, and sometimes you don't know it's happening until it's too late.