Lyric discussion by Silent Opinion 

Cover art for Ms. Shapes lyrics by Bedlight for Blue Eyes

Great song In case you're an idiot, it's about someone wanting and trying to get with a really hot girl

And the ?? is chassis It's pronounced like chasey It means body, but its usually talking about a car He's saying she's got a body like a Cadillac, which is considered a high end car, and has an awesome chassis. So she's got a nice body that flows, tight curves, and is dressed scandolously. I'd hit it. =P