Is it weird I don't find this weird?

My 13 year old with no verbal filter just came home from school sick.  

When I was signing him out in the school office, he said, loudly, "Mom, it was explosive.  Seriously."  The school Secretary and Principal tried very hard not to laugh as they refused to look up from their work.  Then he said "It just kept on comin'...." and that's when I suggested gently that maybe it's best we talk about it in the car.

Then when we got home there was more running to the bathroom, with "Leprechaun prance!" being loudly declared.

Just another day in the life.  Normal as can be.