a person who makes up or lies about certain things that really don't matter. tells stories that aren't true or says things to look cooler.
by BSss; August 08, 2011
Get the gupstermug. How does that gupster keep his investment banking job at Goldman Sachs, don't they require clean-shaven faces and daily showers?
by aerialkat March 29, 2010
Get the gupstermug.