in other words...

e: mom, there's a turtle on nemo that is 150 years old.
m: there's a turtle at the como zoo that is about that old
e: there aren't any turtles at the como zoo
m: yes, right when you walk in, there's that huge old tortoise. tortoise is another word for turtle.
e: mom, i know what tortoise means. did you know "hare" is another word for rabbit??