If you're planning to have a conversation with Owen anytime soon, you'd better be able to call that thing in the picture up there something more than Big Yellow Machine. That tactic only worked for me for about a week, and then I had to hit the internet and educate myself.
We've memorized all the active construction and road repair sites within a 10-mile radius of home, with our current favorite site being the "new why-bwear-ee". Today we saw a crane lifting steel beams and a bulldozer pushing dirt around. Score!
But I would caution you against flaunting your newfound knowledge. Throw around terms like boom, grapple, or skid steer loader one too many times in Owen's presence, and he will just calmly point out the passenger side window at something like this
Image via Astronomy Picture of the Day
and say, "Care to tell me what THAT is, smartypants?"