Since Jay-Z dropped his infamous money phone bar on 4:44 it seems so many rappers have been bothered his words. Great minds think alike, as Lord Jamar has spoken about the "stupidity" of holding money to your ear in pictures. He has asserted on many occasions that real rich people do not flaunt their wealth in that way. In order to combat the money phone, the Brand Nubian took to social media to start the book phone challenge.

In a photo posted on Saturday, Jamar holds a stack of books to his ears with the caption, "On my BOOK PHONE...the KNOWLEDGE is callin!!!" Following that post, the rapper posted a video speaking on his book phone about hearing knowledge clearly. He told his followers to make the #bookphonechallenge happen.

Click above to watch the video and let us know what books you're reading in the comments section.