Keep Circulating the Tapes: If you want to watch this show, you are better off finding the episodes on YouTube from someone who actually taped the episodes when they aired years ago. See Old Shame below, as to why MTV won't release the show on DVD.
Old Shame: MTV doesn't want anyone to know this show existed and neither do the people who watched it as a substitute for Beavis And Butthead (as The Brothers Grunt was made as a replacement for Beavis and Butthead when the show was temporarily pulled for censorship reasons) as they thought it was a horrible substitute, though, according to the animation book, Outlaw Animation, Danny Antonucci actually likes the show and doesn't know why there's so much hatred for it.
Similar to the Geico Cavemen TV shownote which is also a footnote in the history of bad television, and was mercifully canceled after a short run, not just because of audience hatred, but because of the Writers Guild of America going on strike in 2007 and causing the cancellation of a lot of established and up and coming scripted shows while reality shows, long-cancelled TV shows, and sports broadcasts weren't affected, this was based on a commercial. It showed each of the Brothers grunting and straining... and then with a plop, an MTV shaped turd plopped into yellow water, accompanied by relieved sighs. The TV show was announced some time later; the commercial wasn't directly referenced otherwise.