Mama (to three-year-old daughter):  Get off your brother's back! He's not a horse!
Six-year-old son:  She's okay, I don't mind.
Three-year-old daughter:  That's right, he isn't a horse!  He's a giraffe!  And I promise not to pee on him!
Six-year-old son:  Okay no seriously, get off of me.