Mr. Pop History – And it’s a good one. It all came from the band’s touring bus. Here’s something from August of 2004:

“Does it matter? – The Dave Matthews Band is under fire and could face fines because one of their tour bus drivers dumped a tankful of Dave & Co’s human waste in the Chicago River. He did it from a bridge and some of Dave (and the band’s) matter hit a touring boat crossing under. Talk about bad timing, but it confirmed to fans that even Dave’s stuff can stink.”

from www.mrpopculture.com