Is there any kind of underwear that can prevent erection from showing up? - Quora

So I'm in gym class and when I run my penis slips out of my underwear into my shorts and I constantly have to fix it. How do I prevent it?

Tucking - Wikipedia

What underwear can be used to hide my package if I wanted to dress up like a woman? - Quora

Which Type of Men's Underwear Should I Wear? 8 Common Styles - Bellatory

How to hide an erection if I'm wearing loose underwear - Quora

Genitalia: Does not wearing underwear affect penile sensitivity? - Quora

What is the importance of wearing underwear? What is the effect of underwear on my penis? Is it true that wearing underwear all the time is hampering one's penis from growing bigger?

Can wearing tight underwear have an effect on your penis? - Quora

How Gross Is It to Wear the Same Underwear Two Days in a Row