What is the meaning of lean and slipper'd pantaloon?

The phrase "lean and slipper'd pantaloon" comes from Shakespeare's play "As You Like It" and refers to an elderly man who is frail and dressed in loose-fitting clothing, specifically slippers and trousers. It symbolizes the decline of physical strength and vitality that often comes with age. The imagery evokes a sense of weariness and the inevitable passage of time, highlighting the contrast between youth and the frailty of old age.