Because they didn't want to drown.
2. How did the ancient Aztecs keep their calendar?
They Mayan't.
3. How did Aztec warriors die in wars?
By Montezuma's revenge!
4. What famous movie line comes from ancient Aztec lore?
Soy-lent Green is people!
5. Why aren't there any Aztec ghosts?
Montezuma's revenge was effective in both life and death.