My grandson asked why I always put his cereal bowl in the microwave for exactly eight seconds before adding the milk

My grandson watches me put his empty cereal bowl in the microwave every morning. Eight seconds. Not seven, not nine. Then I pour the cereal, then the milk.

He finally asked why.

Punchline

I told him cold bowls make the milk feel unwelcome, sweetie. We're a warm household.

He said that doesn't make sense.

I said neither does eating cereal that makes the milk turn brown, but here we are.