Rap idiot is more like it.

The co-founder of hip-hop lyric startup Rap Genius was forced out after he wrote glib comments Saturday on the manifesto penned by mass killer Elliot Rodger.

Mahbod Moghadam wrote snide notes “that not only didn’t attempt to enhance anyone’s understanding of the text, but went beyond that into gleeful insensitivity and misogyny,” Tom Lehman, the co-founder and CEO of Rap Genius, said in a statement on the startup’s site.

Moghadam called parts of Rodger’s rambling, 141-page diatribe “artful” and “beautifully written” and suggested that “his sister is smokin’ hot.”

Rap Genius’ site is devoted to parsing rap lyrics, allowing users to highlight and add notes to help decipher them. Moghadam’s comments, which have been deleted, were appended to a copy of the manifesto posted on the site.

Moghadam resigned as both an employee of the company and as a member of the board of directors, effective immediately, according to Lehman.