Do you remember the word game, “BOGGLE?” When my kids were little, our family had a rule that if you could define a word, you could keep the points. When my middle daughter was six years old, she played “HWUUH.”
When asked what it meant, she looked me dead in the eye and said, “HWUUH! You know—the sound you make when you pick up something heavy.” After I stopped laughing, she got her points.