Yeah Yeah U Know It

"Yeah Yeah U Know It" is a song written and performed by American hip hop group Def Squad. It was released on January 28, 2003 through Def Jam Recordings as the lead single from Keith Murray's fourth solo studio album He's Keith Murray. Production was handled by Just Blaze. Additional vocals were provided by Jessica Rivera. The song peaked at number 99 on the Billboard Hot 100 and number 50 on the Hot R&B/Hip-Hop Songs in the United States.

"Yeah Yeah U Know It" has been described by Murray as an "old-school hip-hop song".