People that don't know how to take out milk from a packaged carton should never be trusted. Some people don't know how to proceed with pouring some milk out of a package and have a hard time doing this. This can be really hard to follow for some considering that the big red moving tab on the top is hard to understand.
Some people are really too dumb to know what the correct method to pouring milk in a glass is. They do not know how to open the package. This guy's roommate wasn't intelligent enough to know what was going on, and ended up cutting the whole package in a bid to get some milk. This kind of intelligence really appalls us as this doesn't work all the time for people that want to drink milk.