Finding a sense of humor

Chase is 3 1/2. That means we are a mere 6 months from four year old humor. For Andrew and Braden that was a time of horrible made up jokes that would send them into peals of laughter.
Chase seems to be finding his sense of humor. The night we stayed with Jeff and Shelly we were talking about how old he was and how old he was going to be. At some point he wouldn't answer the question of how old will you be on your birthday. I replied with "27?" He gets a big grin and says "Maayyybe!"
For our car trip I bought a viewmaster. After he had was finished playing I asked him for his "circles". He reached behind him as if to get one and with a bit of a dramatic flair proceeded to "hand" me his circles (he had none). He reapeated this several times, each time with his mischievious smile beaming broadly.
Look out us!