long in the tooth
old, advanced in age(from the practice of judging a horse's age by the length of it's teeth)
The plumbing is a bit long in the tooth. It needs to be replaced.
long in the tooth
(adj.) Old, outdated. no longer to perform its primary function at optimum level.
The playstation one is a bit long in the tooth these days.
long in the tooth
A women who has passed her prime
"Hey John, is your new secratary hot?"
"No, she is a little long in the tooth."
"No, she is a little long in the tooth."