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1.
The act by which one ponders either past or future actions, typically of a regretful nature. Often associated with morning after shakes due to a night of heavy drinking or talking to questionable members of the opposite sex.
Bob was just sitting there on the couch glubbering, one hand in a bag of potato chips and the other in his pants.
by Derek Andersen October 29, 2008
 
2.
it's like blubbering, but with a gleh.
Girl A: This lesson is so boring.
Girl B: I know. -They both sit there glubbering-

Girl H: The drama just ended... what do I do with my life? -glubbers on the ground, or in her chair-
by Jellippy October 29, 2013