S.H.
Sorry but next is the 'talking back' phase! Or the 'challenging you' sort of repartee.... but in a more sophisticated way.
My kids, could 'debate' like an Attorney... even at that age.
My son, also does the "how come...?" questions... and the "How do you know?" questions... and the "I KNOW that already" responses.... and the "But Mommy.... you don't understand me...." statements when I answer his "why" questions.
And yes, telling jokes... lots of jokes. Or pulling jokes... my son is always doing that to me... and I am so 'dense' he actually CAN pull jokes on me too!
All hilarious and interesting and frustrating and oh so proud of him at the same time!
OH! If not already... teach him how to cook! My son, when 3, wanted to actually learn to cook. Not just 'pretend' cook. So, he now knows how to cook scrambled eggs. While we supervise of course. They can do a lot more real "helping" around the house too.
For my Daughter, in preschool at that age, the Teacher's taught them the 50 States, the Presidents, songs/wording to Broadway musicals... and the kids, even if ONLY 4 years old... DID know it. This is an amazing age... and very creative.
Don't 'expect' anything, just let him unfurl, like butterfly from a cocoon.
all the best,
Susan