Two year olds are bipolar (Figuratively, not literally) I swear! You would have thought we where…

Two year olds are bipolar (Figuratively, not literally) I swear! You would have thought we where murdering my son trying to give him a bath then as I am drying him off stops crying looks at me with a big smile and says "I am all clean now! Thank you momma and daddy!, I love you" and runs off... My husband and I just looked at each other like.... WTF?