He's just Joking around Rambo ;p
Yeah, im looking for a punching bag, another thing i've always enjoyed is kick boxing, figured I could get into that and wear myself out and build a new skill at the same time.
PB, i don't have a video camera but I do teach bass. My friend really likes the way I sound and I always give him free lessons.
What I can tell you is you want to slap near the last fret, towards the end of the fretboard, right on the edge. You get a very clean sound when you slap there, since its so close to the fret.
Also there are many ways to physically slap on bass... id suggest a straight thumb (not angled at all) Second, use the "Knuckle" on the thumb (The part that bends, not connected to the actual hand, between the tip and the base) and after some time your hand will slip into place and it will be more comfortable.
It took practice, but after some time I got pretty good at it, and I have a very good and sought after tone when slapping a lot of people don't have.
Lastly.
www.talkbass.com
Forum. Go learn.