Little known slang term for toilet paper usually of the softer variety. Comes from the fact that Gandalf from Lord of the Rings has a long white fluffy beard.
by Martin Grondin April 27, 2005
 Get the gandalf the whitemug.
Get the gandalf the whitemug. by Crotch Club December 30, 2007
 Get the The Cumming of Gandalf the Whitemug.
Get the The Cumming of Gandalf the Whitemug.