"Look, Mom! I'm the Headless Horsedog! I don't need to actually WEAR a costume, right?"
"Wait, you're dressing up too? Well... I guess I can wear something, if you are..."
I tagged along trick-or-treating with my friends and their kids as Little Red Riding Hood (I carried dog treats in a basket, heh). The wolf dressed up as a squirrel. I so wish I'd been able to put together a grandmother type costume for her to wear instead, but I didn't think about it until last minute. -_-;