Kavin: Can some shape have an infinite perimeter?

Me (Google): The Koch snowflake has a finite area bounded by an infinitely long line.

Kavin: That's impossible. How can the area be finite but the perimeter infinite? How do you draw such a shape?

Me: You don't draw it. It's math - it doesn't have to be intuitive. You can mathematically describe it but not draw it - just like the number line.

Kavin: I can draw the whole number line.