NOT TO DOODLE!
I found out the hard way that "doodle" means a male's private parts.
As I was walking with the two little girls along the beach, I saw a Labradoodle dog and said excitedly, "Oh! A doodle!" and the little girl looked at me in shock then looked at her dad and her dad couldn't help but laugh. He saw the bewilderment in my eyes and stuck up his pinky finger indicating that I had essentially just said "dick" to his daughter...oops!
I now know that doodle is not appropriate to say in front of little ones :)