If you've seen the movie then you probably remember the part where he starts playing an acoustic guitar by smacking. I know it may sound stupid but it got me really wondering if that's some sort of tapping for chords or something, is that possible? He also smacks the strings above the hole which also makes a sound.
I've gotten a lot of LOLs in my time but I choose not to sig them to not look like a pretentious douchebag

yeah it's possible...just mess around with it...works easiest 12 frett from where you frett it...