Today, May 5, is Cinco de Mayo, and there's no shortage of people stumped as to how to one says "happy Cinco de Mayo" in Spanish.
These people have turned to Google for help--only, alas, it seems Google is a bit confused as well.
"How do you say happy Cinco de Mayo in Spanish" was one of the top terms on Google Trends, which tracks popular search queries, but if you enter the query into Google search, you'll see Google's auto-translate function has gotten a bit befuddled.
As the screenshot of the search results shows, Google Translate attempts to translate the term from Spanish, into English, returning "Happy May 5":
So how do you say "happy CInco de Mayo" in Spanish? Try "Feliz Cinco de Mayo."