Children are so honest. Witness this conversation with daughter:
D: Mommy, what's an imp?
M: It's someone who is silly and mischievous. When you and your brother are rambunctious and clown around, you're being imps.
D: Brother is an imp. I'm not an imp. I'm a pill.
M: What's a pill?
D: Somebody who is whiny and cries a lot.
Well there you go: the completely honest core of a three-year-old.