there is this comedy site where they have guys go out and do crazy stuff and video it. one of the vids was where he bought a flask at walmart and filled it up with water. he would then stop at stop lights and act like he was sneaking a drink and video people's reactions. he would also take big drinks while in traffic and wink at people, etc. it was really funny, one guy even laughed and held up his own flask to show him his lol.