"Ya tu sabes" means "you already know" and is often used in mostly spanish songs which means as much as "ya'll know how I do" in this context.
This expression is used by many spanish artists, such as Daddy Yankee or Notch with his song "Ya tu sabes"
by fabE / ARMAN May 31, 2006
by Alejandro Guerrero July 01, 2013
by cristianoronaldoking717 July 10, 2008