Why am I teaching sarcasm? It's part of a greater plan in the understanding of human communication. When to and when to not employ interactive techniques. Sarcasm, swearing, ingratiation, and selective empowerment are all means -- if properly utilized -- of effectively interacting with fellow humans.
But the funny story is how she conjugates the word sarcasm. If she throws one my way she'll smile and tell me, "Daddy! I sarcasted you!"