Meat openers are little monsters who grab onto Nona. Multiple meat openers can grab Nona at once. They are found on the 3rd screen, they come out of the walls endlessly. You can fight these monsters repeatedly to gain levels. You must have two meat openers grabbing you in order for them to rip off Nona’s underwear.
Single meat opener licking.
Meat opener ripping off underwear.
Single meat opener grab animation.