"Hey, Jack Jack! What you cooking? Hey, you cooking something? Let me see. Hey, be careful, it hot! Be careful! It not hot, it warm! Mmmmm it yummy! Is it yummy? Mmmmm, I like that! Okay, time to eat dinner! You done cooking? Hey, what did you make? Jack Jack, what did you make? Did you make Motorcycle?"
As you can see, he did, in fact, make a motorcycle! I'm told it was delicious. Note the 'burner' (drum) and the 'pot' (mug).