("Ovni" is Spanish for "UFO," by the way: Objeto volante no identificado.)
Some careless recipients let their balloons go. And it made other people think they were UFOs:
A few people back in the 'States went completely loco. Of course it's a government conspiracy. Everything is:
Seriously, come visit ¡Madrid! This was only a hint of how exciting Spain can be.
-- Sue Burke