pad wedgie
Your pad goes up your butt like it's trying to escape and ends up stuck in your crotch. When you pull it out, it makes a crinkly sound that echoes like it was made by a giant crinkly snack bag.
I was walking to the bathroom and my pad got stuck in my crotch and I had to rip it out in front of my friend.
During P. E., my pad went up my butt and I had to take it out in front of the whole class.
I was sitting in math class and my pad made a loud crinkly noise and my teacher looked at me like I was crazy.