Old Wang never frets over small things; he's carefree and in great shape.
Tips
usage
胖 here is an old reading meaning "relaxed, at ease"; in everyday words such as 胖子 it is pàng "fat". Today the phrase is often used with a wink at someone who has grown plump and contented.
history
From 《大学》 (the Great Learning): 心广体胖, "when the mind is broad, the body is at ease". The modern form swaps in 宽 "broad".
