Blimey (interjection)

An exclamation of surprise or emphasis, often used to express mild oath or to express surprise or amazement.

Origin:

Alteration of "by my", first recorded in the early 19th century.

Examples:

1. Blimey, that's a big fish!
2. Blimey, I never thought it would happen!
3. Blimey, that's an expensive car!
4. Blimey, I'm really tired today!
5. Blimey, that test was really hard!