But who's that someone?

But who's that someone?


If you think you're pretty, there's always someone prettier than you,
If you think you're ugly there's always someone uglier than you,
If think you're smart there's always someone smarter than you,
If you think you think you're dumb there's always someone dumber than you,
If you think you’re thin there’s always someone thinner than you,
If you think you’re fat there’s always someone fatter than you,
If you think you’re poor there’s always someone poorer than you,
If you think you’re rich there’s always someone richer than you.
But who’s that someone?