Nagasaki racing snake
A Nagasaki racing snake is a person so thin you could see their bones through their shirt like they were a freakin' ghost.
'You look like a Nagasaki racing snake after a week on the Titanic.'
'He’s so skinny, he could fit in a shoebox and still complain about the space.'
'That kid’s a Nagasaki racing snake. He eats bugs for breakfast.'