By Jon Blistein

May 23, 2013 4:15 PM ET | Rolling Stone

Rapper says references to drug are 'watering down' hip-hop culture

After putting the drug molly on blast at the end of his video for "Bitch, Don't Kill My Vibe," Kendrick Lamar again called out the hip-hop world's recent fascination with the crystallized form of MDMA, a component of ecstasy.

"Sometimes you have the trends that's not that cool," Lamar told MTV after his set at the Hangout Festival in Gulf Shores, Alabama last weekend. "You may have certain artists portraying these trends and don't really have that lifestyle and then it gives off the wrong thing. And it becomes kinda corny after awhile. It's really about keeping hip-hop original and pushing away the corniness in it."

While Lamar didn't single out any MCs in particular, molly has been referenced in rhymes from artists including Trinidad James, Kanye West, Mac Miller and Rick Ross. Recently, Ross' line in Rocko's "U.O.E.N.O." about spiking an unknowing woman's drink with the drug, then alleging date-rape, caused a serious uproar.

"When everybody consciously now uses this term or this phrase and putting it in lyrics, it waters the culture down," Lamar added. "So it's really just time to move on."

Molly isn't the only substance Lamar has spoken out about. His track "Swimming Pools (Drank)" delves into the dark side of alcohol abuse, and throughout his debut album good kid, m.A.A.d. city, he references his aversion to marijuana after a particularly bad experience with the drug.