The three types of rock October 21st, 2011 • Filed under: geology | humor Hah. My sister sent this to me. Related Posts Retaking the SAT at 35 years old March 27, 2012 What a tough crowd October 1, 2010 Bert & Ernie Rapping November 14, 2009 ← Previous Post Extrapolating the screen size of Android mobile phones over time. Next Post → Stop SOPA
