The lower, protruding mandible on a canine with an under-bite, evident in such breeds as Bulldogs, Pugs, Boxers and Mastiffs.

"He's got his nubble stuck in his gubble!"

"Put your gubble in..."
by idiot_legs December 21, 2008
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Name given to the "Bubble Shield" item in Halo 3; a combination of "bubble" and "ghey" meant to reflect the rather lame nature of the shield.
"Dude, sniper, look out! Throw down a gubble!"

"Watch out, that bitch is campin' in a gubble with a shotty."
by Chet Bradley April 2, 2008
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When someone is sooooooo in love they have to declare it over anything including all forms of social media
Will: "Ohhhh I can't wait to see you babe only 58 more hours!"
Random Comment maker: "Holy crap Will is gubbles"
by gubbles123 March 27, 2011
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An untypical obese man; one who giggles with his ginormous lobes flopping in the air.
Oh no! That boy just got rolled over by that Gubbles over there!
by MajorWatson April 8, 2008
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desc or object: like chuff, to be used as expletive or as the description of someone who is ecstatically happy.
how are you doing old gubble
by jonagold October 8, 2005
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the awkward, uneasy, and intense action of voiding the bowels succeeding bubble-guts; it is always horrid and often painful
jimmy had taco bell (with their 35% beef taco filling) and it gave him gubble-butts the next morning.
by joeKERZwilde February 11, 2011
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