The BarRectum was an actual bar built inside a giant anatomical model representing the human digestive system, from tongue to anus. Dutch design firm Atelier Van Lieshout created it several years ago for the Vienna Museum Quarter. From the project description:
BarRectum, Arsch Bar, Asshole Bar, Bar Anus. While the translations sound different, the form is universally recognizable. The bar takes its shape from the human digestive system: starting with the tongue, continuing to the stomach, moving through the small and the large intestines and exiting through the anus. While BarRectum is anatomically correct, the last part of the large intestine has been inflated to a humongous size to hold as many drinking customers at the bar as possible. The anus itself is part of a large door that doubles as an emergency exit.