(arriving at home after school, my son jumps out of the van as soon as I turn it off, and runs toward the neighbor's yard.)
7-year-old son:  LOOK, A CUTE PUPPY!
(about a minute later, he comes back)
7-year-old son:  It was actually a rock with a bug on it.

(loud thud)
3-year-old daughter:  This pogo stick I made with Legos doesn't work at ALL!

six-year-old son:  (watching cheese melt while making soup)  This is SO COOL!  It's JUST LIKE SCIENCE!

(There's a restaurant not far from here that gives small gifts to children as they leave.  As a result, my kids have a curiously large collection of rubber duckies.  One, in particular, has checkered flags where his wings should be, and is imprinted with the words PIT CREW.  Daughter is getting ready for bath, when she decides she really needs that particular duck...)

3-year-old daughter:  Oh, Lightning McQuaaaack...come out, come out wherever you are...Lightning MCQUAAAAACK...

3-year-old daughter:  If Hello Kitty has no mouth...how does she burp?
(Really?  THAT'S your question about Hello Kitty?)