I don't know music, but I know what I like. I just don't know why a lot of the time.
I mean, apart from the usual trouble I have formulating a reply when people say "What sort of music do you listen to?"* -- "I dunno, a bit of everything... um" -- I'm not even sure what it is about individual songs in some cases.
The collected works of Timbaland for example -- there are very few numbers he's had a hand in that I haven't hated instantly, then grown to really like after repeated airplay. While my sense of grammar recoils at "The Way I Are", and its lyrics are at best questionable ("Don't have a motor boat but I can float your boat" -- that's just bad) I can't get the fucker out of my head, and I find myself not minding at all. See also Regina Spektor's "Fidelity" (the "it breaks my hea-a-a-a-a-a-a-a-a-a-a-a-a-a-art" one) -- bugged me at first, but it ended up on the playlist at my Civil Union, right alongside Timbaland-produced "My Love".
And then there are the ones that go the opposite way: like it on first hearing, get sick of it right quick after a few more. I actually liked "Hey There Delilah" for a while -- the lyrics were abysmal, but the melody had a nice old school Simon and Garfunkel feel. It didn't take me long to lose interest though -- maybe the lyrics just got the better of me. Current offender is "Konichiwa Bitches" -- I liked its moxie to begin with, but somewhere around the fourth time I heard it on C4/Juice in a single Saturday morning familiarity started to breed some serious contempt. And there should be a comma in the title.
Fergie's "Big Girls Don't Cry" though, is utter shit and always will be. Always.
* And seriously, who really does have a succinct reply to that question? How many people would really classify their musical tastes as purely "hip hop/R&B" or "Future Industrial EmoPopWave" or "FUCKEN METAL \m/ \m/"?