A gobdule is thick Flemmy mucus coughed or hocked up , out of the throat or nose . It is then spat out , onto a ceiling , the gobdule hangs there, As it slowly forms a droplet shape , (ie gobdule, ) then unexpectedly drops from the ceiling onto the ground or a unsuspecting passerby.
That guy just walked under a gobdule , he’s lucky it didn’t drop on him !

Look at the size of that gobdule! Hate for that to drip down on me !
by Debyumyum March 31, 2020
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