To prattle and chatter unintelligibly, usally when feeling guilty or after some sort of wrongdoing
2 days after doing a runner from a taxi driver, his concience was finally pricked, until, like Hamlet's stepfather, he totters from the banquet, ghostly pale and gibbering with guilt!
by Sethmtut June 22, 2008
Get the gibbering mug.
verb

1 : to fail at something suddenly, unexpectedly and colorfully

2 : to abruptly take your toys and go home
After his proposed fantasy football trade was not approved by a majority of the owners, Andrew hurled a half-eaten chicken strip across the room and gibberred the league. He later finished the chicken strip.
by thefoxx September 9, 2014
Get the gibber mug.
A giant butt. Usually well toned and overall very attractive.
Look at the gibber on that girl.

Man, that girl I was dancing with had a gibber.
by Dictionariaste June 26, 2011
Get the Gibber mug.
When two (or more) assholes engage in a ridiculous online debate, each convinced that the other is an idiot and they themselves are morally superior. Often having no resolution; a gibberish debate.
This guy on reddit keeps trying to drag me into a gibberate.

He must be trolling, he won't stop gibberating.
by whiskeyandwaves May 2, 2014
Get the Gibberate mug.
To speak nervously in a incomprehensibly fast, jumbled and inarticulate manner.
He can barely gibber his way through a conversation with a woman.
by OneBadAsp November 2, 2006
Get the Gibber mug.
Someone who engages bestiality.
1. Farmer Giles has been getting upset for the past few months, there's been a gibber bothering the sheep.

2. Martin lives in London, but likes to leave London for a weekend of gibbing.
by Bogdanovic February 3, 2007
Get the Gibber mug.