تعریف و معنای "a whale of time"

What is the origin of the idiom "a whale of a time" and when to use it?

The idiom "a whale of a time" is thought to have originated from the lively and playful behavior of whales in the ocean, which is often observed as they breach, leap, and play in the water. The expression suggests having a fantastic, enjoyable, and exciting experience. It is used to convey the idea of having a great time or making the most of a moment.