Even if you despise Disturbed and their chode-rock anthem "Down With the Sickness," you know what it is. And you know the part at the beginning when lead singer David Draiman hoarsely yells, "OOH WAH AH AH AH." After googling the phrase—initially looking for the five-minute "endurance test"—I found this compilation of people at karaoke, struggling hard. Whoever made this: thank you.
My favorite is the guy at 0:34 who just says "YOU AH AH AH AH." Just kidding; my favorite is all of them.