It has a slow dance sort of beat and the chorus seems to be "fashion....I knoooooowwwww" or something like that. I'm not sure really. I hear it at work and it's loud so it's hard to hear the actual song. There's some dude rapping or something over it.
Do you know what the hell I'm talking about? What it is called and who's it by?
ETA: Ok, maybe the "I know" part isn't in it. It's more like "fashion...something....something... fa fa fashion". I think. They could be saying something else.
It's not David Bowie's "Fashion".