Bonus!

bonus

Used as an interjection in reaction to a pleasant occurrence or receiving some benefit, often a surprising one. A: "And I got some ice cream for you, too." B: "Ooh, bonus!"
Farlex Dictionary of Idioms.

Bonus!

(ˈbonəs)
exclam. That’s great!; That’s good enough to earn a bonus! Bonus! That’s the best news I’ve heard in a long time!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • bonus
  • bloody hell
  • in-your-face
  • Heads up!
  • dynamite
  • boom goes the dynamite
  • cool
  • attagal
  • gal
  • oh man
References in periodicals archive
Always base your plans on your standard income and take the bonus as what it is, a bonus!
Bonus! The pair also has a trendy scalloped boot cut and denim-on-denim applique.
Bonus! This '80s-style skinny jean is great for creating curves on straight bodies.
Bonus! This major boot cut balances out wider hips, and the long line lengthens legs.
Bonus! The trouser detailing helps these jeans look great on pear shapes.
Bonus! The back detail makes the most of your, urn, backside.