Kids say the funniest things sometimes...

So last night as I was sitting at the computer going over last minute things, Evan and Sierra were in the office with me working on their "projects". I told the kids it was time to get ready for bed and Evan looked me in the eye and said, "I can't go to bed, Mom, it isn't in my instincts." Now, I don't know what the heck he meant by that, but it was so funny. Needless to say, he went to bed, but gave me a great chuckle at the same time. Then this morning as I was getting ready to leave for a PTO meeting, Sierra gave me a hug and told me she loved me and then said, "Don't be gone long, like you're dead or something." Where do they come up with these???