Oh shoot Hun, now you asked, you will get some answers.
How to conceal?
There are various ways with various results, qualities of hiding.
1 - You already mentioned you have one gaff. Great that works right? Depending on what type of outer clothing is used.
2 - On eBay and the like, you can buy ladies underwear that might in some cases work for you. The ones I get are listed under "butt enhancing" panties.
Now the same type of panties are also listed under transgender or cross dresser panties, except they are wider to help in hiding, and much higher in price.
3 - medical tape
4 - KT Tape
5 - HRT (it will make some permanently changes to the parts you are trying to conceal, making concealing easier to do)
6 - GRS
Okay let me be real, number 5 and 6 are out of the question for you, but I do want to say that it does help, for example being on HRT will cause you to no longer have spontaneous erections, as well that it will shrink over time.
Now going back to 1,2,3 and 4.
A good enough tuck that will work most of the times, and I am talking about my own experience obviously, is that you use a tight fitting underwear, gaff or butt enhancing panties. I always buy one that is smaller, aka if xxxl is listed for my measurement, I will buy a xxl. Just simply jerk your "thing" in between your legs to the back and the tight pantie will keep it hidden. Sometimes I wear a pair of nylons, with the legs cut off, over the pantie to give it a little extra security. However sometimes a better tuck is wanted, so then the tape comes in.
But first you might want to shave your pubic hair.
The testicles can be pushed back in the cavity in to the abdomen. This happens naturally sometimes to protect the testicles. Testicles are very sensitive to heat and cold, so this is the natural way of your body to protect them. Anyway, you can push them inside and then bend the remaining "thing" backwards. Now use the medical tape to tape off the area, to keep it all tucked in. Now if you go swimming the medical tape is not waterproof. Here the KT tape comes in handy. This is a sports tape that is waterproof and when applied correctly will stay on for a week, although that doesn't work for us, since we do have to use the bathroom at least once in a week.
This KT tape is applied while rubbing it on, causing the warmth to make a strong adhesive. Of course the tape has to fit within the limits of the underwear you use, as not having it stick out.
Those are my various ways of tucking I use.
