The Aztec word for avocado, ahuacatl, means "testicle" (probably because the fruit typically grows in pairs). But that's only the the second-most interesting thing you'll learn about avocados today. The first? Wild avocados are sort of an evolutionary anachronism; as Smithsonian's K. Annabelle Smith points out, they really should have gone the way of the dodo.
Also from Smith:
After the arrival of Spanish conquistadors, Spanish speakers substituted the form avocado for the Aztec (Nahuatl) word because ahuacatl sounded like the early Spanish word avocado (now abogado), meaning “lawyer.”
So the Nahuatl word for testicles was a homonym of the Spanish word for lawyer? There's no way that's a coincidence.