jibberastic 

adj. when describing someone that speaks in tounges and or in such a state that it can not be comprehened.

It was hard to understand their jibberastic dialect.

jibberastic by Adam Stout November 16, 2004

Jibberishical

words that aren't real/ speaking in utter rubbish.

i shall speak to you in a jibberishical way.

Jibberishical by sweetevl93 July 14, 2009

Jibbersticks 

to be cold

blimey its jibbersticks in here!

Jibbersticks by everindrummer January 8, 2010