Lucy's dinner party conversation

We had a dinner party last night, and we set up a little table for Lucy and her young guest. The little girls were very excited about their own pretty table, and they sat down to eat before everyone else was ready. They were talking so animatedly, so I drifted over to eavesdrop. Lucy was holding forth: "My mommy has a BIG BUTT! It's so really big!" Rising in her chair, spreading her arms out for emphasis, Lucy concluded, "I call it a FIREBUTT!!!"