Iraheta co-wrote this song with former Evanescence member David Hodges. She explained its subject matter to Entertainment Weekly: "It's out there for people who pre-judge, who pretty much judge a book by its cover. It's pretty simple, but it definitely focuses on how people talk before they even know someone or something, how they talk out of their butts and they just don't know what they're saying."
"Crank That (Soulja Boy)" was the most successful digital track of 2007 in the US with 2,909,000 downloads. On January 6, 2008 it became the first song ever to sell 3 million digital copies in the States.