This song finds Brown reflecting on his childhood struggles with nightmares caused by post-traumatic stress syndrome, the result of a childhood numbed by violence:
"I feel like a prisoner of war Reacting sporadically to what the mind absorb Probably need a shrink, can't get a wink."
"I can't sleep at night because I have these nightmares all the time," Brown explained to MTV News, breaking down the song. "I don't know if you can really consider them nightmares, but it'll be dreams of me being back in the day, as a 19-year-old, and I get so caught up in the dream that when I wake up, I'm so just happy to be where I'm at in my life. I'm glad I'm not doing that anymore. It gives me real bad anxiety."
"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.
The third verse of "Mmm Mmm Mmm Mmm" by Crash Test Dummies ("they shook and lurched all over the church floor...") was inspired by girl whose parents would speak in tongues at their Pentecostal service.