Used in the Wilco song I Am Trying To Break Your Heart. Jeff Tweedy is saying that he is a heavy drinker. A figure of speech meaning he drinks as much as an aquarium could hold.
Apple Picker - "I get drunk so easily, I am definitely not an american aquarium drinker."
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2 million.