Tamp rocket

When you have a tampon in and you’re doing an activity that requires intense physical exertion of the body, specifically from the abdomen and/or legs, that makes it feel like your tampon is going to shoot out like a rocket.

Dude I can’t go to the gym today, I’m gonna totally blow out a tamp rocket.

“Bro, Stacy blew out a colossal tamp rocket during her swim meet last night.”
“What was she doing?”
“The breaststroke.”
“Damn.”