A human (crawls as a baby, walks as an adult, uses a cane when elderly).
This is from Oedipus Rex a Riddle Oedipus answered from the sphinx.
Oh, yeah, and I guess a human can live a whole lifetime in a day?! This is f**king stupid.
Day doesn’t necessarily mean 24 hours, it can just mean an expanse of time, such as “In my father’s day”, “In the present day”