Pat-the-bunny jokes aside, of course.
"Kayte is breast-feeding and we do not have a nanny or a trusted babysitter at this time, so Faith goes everywhere with us," Grammer said in a statement to E! News Tuesday. "We enjoyed the party with a few of our friends, the baby slept as her ears were covered the entire time and we left shortly after midnight."
Other than that, the Boss star added, Kayte went as a witch—"her hat was missing as she had removed it because her wig was itching and it was hot"—and he managed "an uninspired Dracula" costume.
Judging by a photo snapped at Hef's bash of Faith fast asleep in her carrier, she just went as a baby.
"We enjoyed the evening. We love our child," Grammer concluded. "Kayte is my wife and lady love (who is 31 and goes by the name Kayte Grammer, by the way, not Walsh). The world is round. All our eyes are blue. Happy Halloween and Cock-a-doodle-doo!"
A doting daddy rooster couldn't have said it better himself.