I did this trick at UMASS campus a few years ago and damn near gave about 15 people a mental issue all at once as I walked away.
this is prolly the easiest and most well thought out bottle penetration I have seen with such mind blowing results because they SEE and HEAR it go in..
clean up is easy because when u hand the bottle out the spectators are seriously crumpled up inside their own heads trying to figure out what just truly happened.
great trick I havnt done it in a while but I have been carrying the gimmick around alot lately looking for a perfect bottle.