(n), (v); the act of hot-boxing one's car when it is completely covered in snow. The experience is not only unique and enjoyable, but also very secure because outside onlookers cannot tell that Cannabis is being consumed within the car. One should be sure that upon entering the vehicle and closing the door, that the user does no knock all the snow off the window. This is very easy to do accidentally and destroys the concealment and novelty of the Igloo.
You wanna go igloo my car???
My roommate is home, we can't blaze at my place; its cool we'll just igloo my car.
A house where a bunch of ice heads (methanphtamine addicts) congragate and be icy (the act of being tweaked ie. running around in the middle of the street with your stupid ice head girlfriend with a stolen stero.)
Everyone is icy around here there must be an igloo near by.