That's a question we all have soon enough. You just need to learn to tuck. The following article in the Susan's Wiki is the best tucking tutorial I've seen:
https://www.susans.org/wiki/Tucking_and_tapingThere are many different ways, though. I have some good satin control panties from Vicki's Secrets that work great. Our beautiful friend Barbie wears children's panties in a small a size as possible. You can buy specialized undies called gaffs that do it. I've even found just the combination of normal panties and snug woman's jeans will hold every thing in. The basic idea is to push the globes into the inner universe and send pull the rest back between the legs. I recently discovered my protrusion is actually completely retractable. If I gently push it in it collapses accordion style all the way. This surprised me at first. Some people even tape things up, but this can be pretty painful (having tried it) and is best used only for special occasions. When wearing dresses and skirts, you really just have to concern yourself with the forward protrusion, so things can be pulled into more of a downward direction. Properly tucked, you can wear pretty much anything and look good.
