Most rock fans know Metallica front man James Hetfield uses the expression "Yeah!" in many of the band's tunes.

However, a YouTube compilation from someone with way too much time on their hands sheds light on just how many times the word "Yeah" has been used in a song... and it's amazing!  Nearly, every Metallica song has a "YEAH!" in it.

See for yourself here... YEAH!

Comedian and Metallica fan Jim Bruer made fun of Metallica's "YEAH's" during MTV Icon 2003.