Giles, for his part, follows the arc of the hat as it falls. He makes to go after it as it drifts innocently to the ground, then remembers himself, and curses under his breath.

Only then, about three seconds later, does he think to look back at the...

...not a horse.

Giles gives a yelp of surprise and whirls around so that his back is to Sif. "Um, s-sorry."