Lay-Z Boy
I don’t think I became lazy until I was a teenager. My toddler, however, has mastered it at three.
It’s a very selective laziness. He’s off the wall with energy most of the time, i.e., when you’re trying to get through the security line at the airport and he decides he wants to pretend to be The Flash; but when it’s time for him to actually do something? He’s less active than most of the people who work security at the airport.
Of course, if I had someone willing to carry me around everywhere, I’m pretty sure I’d let my legs atrophy until they melted off, so who am I to talk?