Audrey on belief systems

Our conversation in the car last night while listening to Christmas carols on the radio:

Audrey: "Mom, what does 'merry' mean?"

Me: "It means 'happy'."

Lili chimes in: "Yeah, and some people say 'Happy Holidays' because they believe in different things than us."

Audrey (dryly): "Yeah, and some people believe in unicorns."