This is a point in a continuous monthly cycle when the male species is subject to random acts of irational mood swings emotional changes and in extreme cases domestic violence against men.
There is no reasoning with this creature of the dark and the best possible method to avoid the above mentioned is to simply laugh and go to the pub with the boys and tell her she needs to calm down and re-asses her behaviour.
Jimmy: Sorry to hear I'm off the pub...(leaves as quickly as possible avoiding all confrontation)
Bartender: Fancy seeing you here again champ! Troubles with the Mr's again?
Jimmy: Yeah the stupid bitch has got her chatty's dude.
1: (adj) One who's social structure is either mostly or entirely based around geek culture as defined by the standards of "geek" prior to 1985. Especially pertaining to ham radio enthusiasts or in some cases, CB culture.
Origin: From the root 'chat'. (Ham radio enthusiasts prefer verbal communication using antiquated analog communications technology.)
Friend: "Dude... I didn't realize you were such a chatty... you realize we can no longer hang out now, right?"
2. I stood in sumfink reet chatty on the way 'ome.