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.

that t-shirt was 10 gibber

He's gibbering like a gibbon.

You don't know what you're talking about and you are a cowardly gibber!

Wow I just pulled a Gibber!

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!

Look at the gibber on that girl.

Man, that girl I was dancing with had a gibber.