Hummer house
n.— «I think of them as “Hummer houses” for their obnoxious size—they are surely as gaudy and embarrassing. Perhaps even more so, as vehicles are gone to the scrap heap in 10 years.» —“Letters: Stop ‘Hummer houses,’ too” by Harper Jones Houston Chronicle (Texas) June 24, 2006. (source: Double-Tongued Dictionary)