Anyone who says they don't have a favorite kid is LYING. In fact, they're probably the same person who, when asked in the first three months of motherhood how it was treating them, responded with "oh it's wonderful, being a mommy is such a beautiful thing."
Again with the lies! Motherhood isn't beautiful! It's messy, pudgy, wrinkly, chaotic, snotty, and often times extremely smelly.
There are certain things that my children know: My husband makes the best pancakes, their dad will always spring for donuts, and I'm the one who reminds them to do their homework and practice piano. Oh, and also, they know that they're my favorite.