Snap!

(oh,) snap

1. An exclamation of shock, surprise, or disbelief when someone says or does something remarkably or controversially incisive, especially an insult or retort. A: "The boss said my work had been getting too sloppy to keep me on the team, so I told her, 'At least my company isn't on the brink of bankruptcy!'" B: "Oh, snap! I can't believe you said that!" A: "I don't know why John is giving you dating advice—he couldn't get a date if he was the last guy on the planet." B: "Hahaha, snap!"
2. An exclamation of dismay or vexation, especially upon remembering or realizing something unfortunate or undesirable. A: "How's studying going for your exam?" B: "Oh, snap! I forgot that was this week—I'd better hit the books!" A: "Remember that I've got work on Saturday, so I need you home to look after your little sister." B: "Snap, that's this Saturday? But I was going to go to Jeff's house for a party!"
3. An exclamation of joy or excitement when something very good or fortunate happens. Just found out I aced my exam—snap! Oh, snap—we're going to states!
See also: snap
Farlex Dictionary of Idioms.

Snap!

exclam. Wow! Snap! Great idea!
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • (oh,) snap
  • snap
  • (well,) bust my buttons
  • (well,) shut my mouth
  • Are you having a laugh?
  • gotcha
  • almighty
References in classic literature
"He's angry with Snap!" she exclaimed to herself in a whisper.
No Name
Dallas, TX, April 09, 2014 --(PR.com)-- Snap! Event Productions today announced Amber Jenkins has been named a partner in the firm effective immediately.
"Amber works tirelessly to be sure every Snap! client has a successful event and a positive experience with our firm," said Terri Sue Wensinger, founder and president of Snap!
Snap! Event Productions is a unique event management and support firm with an extended team of independent senior-level professionals experienced in creative and content management, graphic design, talent and entertainment consulting, event logistics, audio visual, staging and technical support.
Amber Jenkins Named Partner at Snap! Event Productions
Snap! out of your float-down-the-River Denial and be free.
The Thing: My Crazy Family
Once you can hold your stance for one minute you will be ready to snap! Continue to work on the overhead snap.
Snap, snap, snap! Continue to work on the overhead snap!
The essentials of long snapping
and then, late last season, I heard about a coach who was running a double wing offense something like mine, but with a direct snap!
Wildcatting with the double wing