My 3 year old asked how long he had to wait until he could stop listening to me. I told him he had to listen to me for the rest of his life. He looked me dead in the eyes and said, "I'll listen to you for the rest of YOUR life." Toddlers are cold-blooded, man.
*snuggling with my 4yo*
Me: I love you, buddy. Do you know that?
4yo: (insanely annoyed) OH MY GOD OF COURSE I KNOW IT YOU TELL ME ALL THE TIME WHY DO YOU SAY IT SO MUCH STOP IT!
Kids are great.