When one gets to the point of inebriation usually felt at the end of a heavy nights drinking.....before actually going out for a heavy nights drinking. Only at the end of this kind of jaunt, can one be seriously considered as being Batfaced.
1) (At around 3am, one may quote) "Those three bottles of wine that I consumed before going out drinking have got me rather Batfaced"
Batfacing is a facial expression of someone who finds something so funny and/or outrageous that they can’t stop laughing. In some cases the person may not even be able to laugh audibly and results in a silent shrugging of the shoulders and accompanied by tears welling up in the eyes.
Joe: “Did you hear the joke David said during class?”
John: “Yeah man, it was so good I was batfacing.”