Here are a few.
The phrase 'No Spring Chicken' is usually used in a negative way to describe someone who is no longer young, probably past his young adulthood, and sometimes doesn't realize it and tries to look and act younger than his age.
no spring chicken. No longer a young person, as in Sally's no spring chicken, but she plays a fine game of tennis. This unflattering expression, often applied to women, has been used since the early 1700s, although spring was omitted from the earliest citation (1711).
I think I look pretty good, considering I'm no spring chicken.