The rambutan, according to Wikipedia, is native to Indonesia and Southeast Asia. Rambutan in Indonesian or Malay literally means hairy (so my mom was pretty right on in wanting to name it Harry). The exterior of the fruit is like the shell on a nut. It breaks open easily and reveals what Cale calls a Martian grape. I call it just like an eyeball. I cannot eat them because of their creepiness. However, they are supposed to be delicious.
This picture from Wikipedia shows one cut open. However, you would never cut it open. You would just peel the shell off.