:::: You raise a good point.  Our entry mung (computer slang) and wikt:mung are both far off base - as explained by Random House in a commentary regarding the entry in their slang dictionary, mung in fact dates back to the 1940s, and by the 1960s "mung up" meaning to destroy was not just a computer specific usage.  When we are willing to add rather than delete, research freely rather than alter for appearances, there is no limit to what we can do working together.  As for making a drawing, I'm unclear on some details e.g. whether it's a pregnant human or gorilla, mouth or vagina, manner of beating, etc.  Also whether this particular sub-definition is relatively common or not.  Or whether there are films that have depicted it visually to use as a guide.  It might be a difficult assignment.  Doesn't mean it shouldn't be done if it can be done.