About 6 months ago, my band was setting up on stage to play our set. As usual, our two guitarists were taking ages and messing about with huge pedals and such. To entertain the impatient crowd, I played a 10 second slap rudiment and waited for some sort of "oooh, ahhhh" reaction. Looking up after having played the simple chop, suddenly I hear our drummer mimmicking what I just played on his drumkit. What followed...was a bass vs drums battle. I continued to play another rudiment, and he 'played' it on drums. Everytime I played a different chop, I would stop, and then let the drummer do his interpretation of it. Even our guitarists at this point stopped messing about and were watching. Everytime my drummer managed to pull off a comeback (FYI: He was mimmicking my basslines using different parts of his kit to represent the different sounds I was getting out of my bass, and he was adding his own rolls and fills to spice it up and force me into making my next chop even harder)..The crowd went nuts. This 'battle' went on for 5 minutes, Until I thought I'd end it by playing a 30 second free time solo, which he surely could not follow, but did a great job on a solo of his own. The crowd loved it. Its a bit hard to describe how the battle actually happened, but I hope you can figure it out for yourselves and maybe try it out with your bands; its great fun. Now we have whole band battles at our jam sessions and usually buy the winner a beer, or something like that.