Mathew Knowles has remained tight-lipped about the 2014 elevator fight between daughter Solange and son-in-law JAY-Z for four years. Now, as he's promoting his latest book, Racism: From the Eyes of A Child, the Knowles patriarch has opened up about the incident and why he anticipated it. 

During a sit-down with Wendy Williams of The Wendy Williams Show, Knowles took a trip down memory lane, discussing how he managed Destiny's Child, how he raised two of the most famous sisters in the music industry and how it feels to be the grandfather of the world's most famous children. 

Amid all the heartwarming discussion, Knowles also commented on that infamous 2014 elevator fight where Solange was caught on tape hitting Hov.   

"I laughed so hard because if you know Solange — that's Solange. You just never know what you're going to get,” Knowles said. He also called his youngest daughter “a firecracker,” and then turned to the audience joking that he doesn’t know where she gets it from.

"Beyonce would be in the corner, quiet, just like, ‘When y’all finished let me know.’ So I just laughed,” he said.

Hov and Beyonce have remained mostly silent about the incident. In four years, there is very little info on what started the falling out.  

Last year, however, during his interview with the Rap Radar podcast, JAY-Z said the trio were good. 

"We’ve had one disagreement, ever,” he said. “That’s my sister. Not my sister-in-law, no, my sister. Period.”

Knowles made headlines about two months ago after confessing that he did not know that Tina Knowles Lawson, Solange and Beyonce's mother, was a black woman.  

"I actually thought when I met Tina, my former wife, that she was white. Later I found out that she wasn’t, and she was actually very much in-tune with her blackness," he said.