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"