 by Rihanna), and "HairyBack" (a parody of "SexyBack" by Justin Timberlake).In addition, Nickelback had originally given Yankovic permission to use their song "Photograph" in "Polkarama"; however, Yankovic was unable "to find a way to incorporate the song into ["Polkarama"] where it didn't sound wedged in or tacked on", and he decided not to use it.Yankovic nonetheless thanked Nickelback in the liner notes to "Straight Outta Lynwood", however.