My 5yo's humor is starting to come in hot

We were at the grocery store and he points at the eggs and goes 'Dad why do we eat chicken periods?' I nearly lost it in the produce section. His mom was mortified but I was so proud. He's developing that weird kid comedy that only makes sense to other kids and exhausted parents. My life is now an endless stream of questions about bodily functions and why things are called what they're called.