I've been set straight by Little Brother, who obviously is an expert on the subject because at "play school" today they had a "pee-hana, where you hit it like in tee ball, with a bat, and you get the candy when it falls out." He has a nice little bag of candy too.
I asked him if they had the piñata at his school because it was a special day.
I asked him if the special day was called "Cinco de Mayo." (I am a former Spanish teacher, after all. I should have some clue here.)
"No, it's Pee-hana Day!"