Nerd rap, as with all forms of self expression, is difficult to classify and is executed with varying degrees of excellence. Many artists have dabbled in nerd rap at one time or another without specifically meaning to and, vice-versa, many self proclaimed "nerd rappers" do not fit this definition.
Music= Sound arranged over time.
Stop giving good nerds a bad name.
"Scienticians make good nerd rap!"
"Aesop? Nerd rap, fa sho"