The act of placing your index finger under the nose of an unsuspecting victim after that finger has been used to scratch ones ass.
by Fred Garvin MP February 12, 2009
Get the Shitfingermug. A driver who impedes traffic flow because he or she has his or her fingers up the ass (either figuratively or actually)instead of on the wheel.
by bardolino December 27, 2008
Get the Shitfingermug. by Peter McMillan April 2, 2008
Get the shitfingermug. by S Hayes June 11, 2003
Get the shitfingermug. by King of alliance NE May 1, 2009
Get the Shitfingermug.