http://www.thisislondon.co.uk/news/article-23378894-details/So+what+did+happen+after+drinks+at+the+embassy,+Bishop/article.do

"Or, even more intriguingly, could it be - as the indignant Bishop now claims - a sudden neurological affliction which has left him unable to recall any of the post-party events?"

yes - it's happenned to me before!