More than merely being a typo/contraction of "Good", this refers to a sort of unthinking, irrational pleasure, such as a euphoric high induced by drugs.
"Omg i smoekd 20 bags of weed today i feel so gud", said the stoner in the internet chatroom, before staggering off to start his 21st.
by Pepsiman May 19, 2011
Get the Gudmug. in west bengal the word "gud" or "gud marbo" means fucking a girl/women in her vagina,cunt
example:
"tor bou er gud marbo tor samne"..(i will fuck ur wife in front of you)
"tor bonke chude tor boner gud mere debo re madarchod"
"tor ma er gud mari sala rendir baccha"..
"ami tor boudir gud marbo"
"ami amar boudir gud marte chai"
these are very insulting & abusive languages that are being used with the word "gud"
example:
"tor bou er gud marbo tor samne"..(i will fuck ur wife in front of you)
"tor bonke chude tor boner gud mere debo re madarchod"
"tor ma er gud mari sala rendir baccha"..
"ami tor boudir gud marbo"
"ami amar boudir gud marte chai"
these are very insulting & abusive languages that are being used with the word "gud"
by boudirgudchata December 31, 2011
Get the gudmug. Short for geographically undesirable. When a potential date lives to far away to make it worth the effort.
by gcj22 July 31, 2007
Get the gudmug. 
Geographicallyl Undesireable relationship
by Jakers July 20, 2007
Get the GUDmug. by Spice gang we out here September 8, 2018
Get the gud gudmug.