http://www.trendhunter.com/photos/11951/2
this porthole being used in every dive bar. Biker bars will probably have a whole row of these to accommodate tough smokers who can’t stand the cold outdoors. At Maltermeister Turm in Goslar, Germany, will found a way to dodge the recent smoking ban. The bar’s owner had three holes cut into the waller. Smokers can put their head and both arms through the holes to smoke away while they butts still stays toasty warm indoors.The owner says it was originally supposed to be a joke, but now a lot of patrons actually use it to have a cigarette!
Calling them butt holes is obvious, would be interesting to see the rear view.