The "musical" genre in which the lead vocalist or singer sounds as though they are straining to make a huge shit, which ironically is often what their music is.
by Jeff in Austin September 12, 2012
Alternative 90's and later rock music wherein the band's lead singer constantly sounds like he's pinching a cement loaf. First made popular by Bruce Springsteen, later adapted by Top 40 crackers like Nickelback and Three Days Grace.
"Hey, did you hear that new Chad Kroeger song?"
"No way, I can't stand that constipated rock. He sounds like he needs a stool softener!"
"Well, it's still better than screamo"
"No way, I can't stand that constipated rock. He sounds like he needs a stool softener!"
"Well, it's still better than screamo"
by Prof. Wreck June 22, 2007