Dahna Rowe: I'm Drunk, You're Ugly (audio at thesixtyone.com)
This is rather crude, but makes me laugh every time I hear it. The country sound with the crude lyrics is a contrast that adds to the amusement for me. If you can't relate to the lyrics, then you were never a twenty-something single.
Lily Allen: Fuck You (video at YouTube)
I know I generally keep my posts clean, but this one has great lyrics. Give it a listen. I like the juxtaposition of her sweet voice with the directness and strength of the lyrics and the crudeness of the chorus. Lily Allen is like a younger, edgier, less mature version of Dido. I like them both, but would like to hear Lily do an acoustic album so her lyrics and sweet voice can stand out in even starker contrast.