Psy's "Gangam Style" has been watched on Youtube 2,281,389,041 times. This is the equivalent of 18,000+ YEARS lost from the collective human species because of Psy.

(2,281,389,041 views x 4:12 minutes)/60 minutes/ 24 hours / 365.25 days = 18,217 YEARS.

This is the same as 70 entire lifetimes of watching Gangam Style