While eating in a restaurant， I reprimanded my four-year-old son for speaking with his mouth full . "Mump umn Kmpfhm，" was all I heard.
"Drew，" I scolded， "no one can understand a word you're saying.
"He says he wants some ketchup，" my husband said calmly . A woman sitting nearby leaned over and asked， "How in the world did you understand him?"
"I'm a dentist，" my husband explained
