Noun. Relating to Barbara - A person of extreme clumsiness, jumpiness, or stupidity
Verb. To do a 'Barbara' - This is to do or say something that is eaither completely ill advised or clumsy, often as a result of actions to which you have given little or no though.
hahahahahaha, that person over there just did a barbara, did you see??
No, what happened?
He was too busy talking and not paying attention to where he was going, so tripped over a chair and landed on his arse