A married couple heard a ruckus outside their home, so they stepped out onto the porch to find a parade in progress, coming around the main corner of their town and stretching all the way down the street.
A float with an enormous “U” made of flowers was driving away, in front of them was a giant “V” float, and just turning into the intersection was another float with a huge “W” on it. As they watched, yet another float appeared around the corner, bearing a big, flowery “X.”
The man turned to his wife. “Do you know the reason this parade’s going on?”
“No,” she said, “But I’m sure we’ll see Y in a moment.”