My kid says the darndest things... in public!

My daughter is a silly, silly girl. And embarrassing! We go to Applebee's every Wednesday night for kid's night. So here we sit, eating, drinking, being merry, and Berlyn pipes up and says something. Now, I wasn't sure what she said, and I thought that maybe what she said was mildly inappropriate, but I wasn't sure so I asked to repeat herself. No, I heard her right the first time, or so I thought. So I repeated the phrase back to her. And she replies in a VERY loud voice that I'm pretty sure the entire resturant heard, "NO!!! HOT, ROUND BUTTOCKS!!!!" I was informed this is off of Shrek. The shows I let my kids watch. Anyhow, I did laugh entirely too loud at the 'hot, round buttocks' phrase. I just have no idea where the heck it came from. What is going through a 5 year-old's mind when they say something like that?