"Gribbling" is being completely unaware of events that are going on around you, especially those that are completely obvious.  Comes from King of the Hill's Dale Gribble, whose wife is having an affair, and he is the only person who is completely oblivious to what is so obviously going on between his wife, Nancy and her lover, John Redcorn.
Everyone thinks that Jacob is just gribbling about the fact that Kerry lost.  He seems completely unaware.
by Nicole November 15, 2004
 Get the Gribblemug.
Get the Gribblemug. Two main definitions:
1. A male of poor pullling ability who resorts to clinging to any female that fails to have the power or grace to tell him where to go. Usually seen after large consumption of alcohol. This male is usually ignored in a manner expected of parasites and can cause much amusement to his piss-taking mates.
2. A member of a male clan fails to attend 'boys night' through "gribbling". This is due to being 'loved up' or as part of the continued mission of "keeping the misses happy".
1. A male of poor pullling ability who resorts to clinging to any female that fails to have the power or grace to tell him where to go. Usually seen after large consumption of alcohol. This male is usually ignored in a manner expected of parasites and can cause much amusement to his piss-taking mates.
2. A member of a male clan fails to attend 'boys night' through "gribbling". This is due to being 'loved up' or as part of the continued mission of "keeping the misses happy".
by Don juan January 11, 2004
 Get the Gribblemug.
Get the Gribblemug. A mustache that is not quite a mustache but is just a little bit of light lip hair. Oftenly found on 13 year old boys. Named after Joseph Gribble a chartoon character from Mike Judge's and Greg Daniels's show "King Of The Hill".
by Havok Daniel October 28, 2014
 Get the Gribblemug.
Get the Gribblemug. by Gribble  February 21, 2018
 Get the Gribblemug.
Get the Gribblemug. a word used to descrriba ea assivley large being which rocks too heavy metal and wears sexual metal jackets
by Anonymous May 11, 2003
 Get the Gribblemug.
Get the Gribblemug. by Freight Mover September 10, 2014
 Get the Gribbledmug.
Get the Gribbledmug. by kool kid for life May 5, 2005
 Get the gribblemug.
Get the gribblemug.