What is a 'pirate smile' as referred to in Elton John's 'Tiny Dancer'?

Oh, dude, a 'pirate smile' in Elton John's 'Tiny Dancer' is basically when someone grins like a swashbuckling pirate, you know, all mischievous and charming. It's like, they're flashing a smile that's a bit cheeky and daring, probably with a twinkle in their eye. So, yeah, it's basically a smile that's ready to plunder your heart or something.