Popular music, so mundane, mediocre and unoriginal that it becomes offensive, inducing temporary fits of rage, nausea; and in some cases, total mental breakdown. Typically found in most of today's official top 40 chart, but has had a strong following since boring people started making music.
ED - "Have you heard what the number one selling album of 2014 was?"
RICHARD - "Yea, absolute beige-core. I'd rather stand up for a week, watching wet beige paint stay wet, then throw myself into a massive fucking can of beige paint than listen to any of that shit."
ED - "I quite liked it."
RICHARD - "Fuck you."