What is Lactomangulation?
1.
Manhandling the "open here" spout on a milk container so badly that one has to resort to the 'illegal' side.
After lactomangulating the milk carton, I switched to the other side and cut the top off.
2.
The act of making a mess of opening a cardboard milk carton, forcing you to use scissors to cut the innappropriate corner.
Bloke 1- "So, how was your day?"
Bloke 2- "Terrible. Plagued by lactomangulation, and my dog died."
3.
when you are trying to open up a carton of milk and it is so difficult that you either shred it or have to resort to the "illegal" side
oh man, you sure lactomangulated that carton of milk!