@Julia1996 - You were SO right about these cupid tummy control panties!
A note to other new girls that find this thread:
Tucking for me as a transsexual is all about controlling what you don't want to a point where its like you don't have it. This is both for peace of mind and so you can wear certain clothes.
The most important factor in that equation is the gusset. In panties, that's the little bit that runs between your oysters and your backside. That bit of fabric is what will control your unwanteds. What I have noticed is that a lot of shapewear and hose have legs. It might just be my build but legs pull when you walk, moving the gusset around on its edges. For me this eventually lets things move and that's exactly what you don't want. My oysters are always trying to get back out.
There are two things I must have tucking. Two squares of toilet paper wrapped around the unwanted member and these panties.
The cupid tummy control panties have a nice sized gusset. They are comfortable, in fact, they feel nice. I bought them just a single tick small. They don't have legs, and once you pull them up the side seams will fall just perfect to hold your oysters in. If they had legs they would not do this or they would, when being active, move in a way that allowed the oysters to come loose and things to move.
Best part? I don't feel like I'm being eaten by a giant jungle constrictor snake all day.