tip of the cap to Art Linkletter, RIP
My son and his son went on vacation together. We shared a room with a bathroom. After showering, while I was getting dressed, my 3 & 1/2 year old grandson looked over and giggled. "I see grampa's wee wee." I said, "that's not a wee wee, it's my hammer!"
The little genius said, "nuh uh, it's a wee wee."