Sometimes the stuff DJs write on record covers is very informative, and can really tell us a lot about the band or album in question, or at least give an insightful glimpse into those bygone days. Sometimes, however, they latch onto a misunderstood word in the title of an album and turn it into a long inside joke that makes sense to pretty much no one.
The Minutemen’s Project: Mersh was following the long tradition of pretending to cash in and/or sell out, and/or making fun of cashing in and/or selling out (See: The Who Sell Out, Bongwater’s The Big Sell-Out). The albums on this song are not exactly pop by most standards, but they’re certainly more accessible than their classic Double Nickels on the Dime... hence the title Project Mersh -- “Mersh,” as one of our more helpful commenters below explained, being slang for “Commercial.” I have no idea who Marsh is, though, so I can’t really help with that.
“They be back again... well I dunno about ‘hit songs,’ but these are more, uh, pop? I guess. Cool references to BOC, and it says ‘peace in Central American please!’ on the inner side one groove. 45!!! too!” Oh yeah, a Steppenwolf cover too!”
“Is that ‘Mersh’ or ‘Marsh’?”
“Inquiring minds want to know...”
“Has nothing to do with marsh, as far as I know...”
“Project Marsh: In which Minutemen ditch their former personnaes [sic] and resort to Marsh’s fave music: Pop.”
“Wow! Check out ‘More Spiel.” Holy shit!”
“By the way, Muggs, don’t you EVER spell ‘Marsh’ with a ‘C’ again!”
“‘Mersh’ means ‘commercial’ in San Pedro vernacular.”