Be thou not drunk with wine but be instead filled with the holy spirit.
http://www.whiskymag.com/whisky/bran...hisky1392.html
fiddletown pretty much says it all. If you're drunk it compromises your testimony as a witness. While you may be innocent as a lamb, if your evidence is not seen as trustworthy, you just might become a suspect.
There is also the real possibility that you might say something real stupid to the authorities when they arrive.