look up any word, like plopping:
 
1.
The thin layer of film covering a bottle of unopened ketchup. This is the transparent layer, just underneath the aluminum part.

It often lets out a small odor, and is messy to break.
Gross, I got the ketchup juice all over my hands trying to open the Heinz Hymen
by Semajskolka November 29, 2010