Bobby McGee's Conglomeration mug

A search for "Bobby McGee's" etc. brings up nada here on B&B. Does anyone have or know about the mug in this link. It's shaped like a toilet. I'm not certain it's true purpose was for shaving. Anyone know for sure?

http://www.shaving-shop.com/items/shaving-cups/bobby_mcgeesshaving_bowl-detail.htm

They actually use to serve drinks in these at Bobby McGee's restaurants. I remember drinking out of one when I went there as a kid. It was a pretty fun place.

anyone here ever make lather in the "toilet bowl"?