Raising the Smelly Kid

I have a 5 year old son, who recently informed me that he smelled gamey after playing outside. He liked his "man smell" and didn't want to lose his stink. To which I replied, OK.

First of all, it was hard not to laugh, because he was very serious. I am pretty sure he got the vocabulary gamey and man smell from his dad. (Thanks a lot honey!!) So now, I find myself raising a wannabe smelly kid. Is this a boy thing?