Flashcat 

An awesome concept of pretentiousness. People trying their hand at various artistic concepts, notably film reviews and music mixes.
Also as a verb for doing a project of this kind, or as an adjective to describe one.

"Hey, what're you doing?"
"I'm flashcatting a mix."

Flashcat by RHoodie December 9, 2008

flashcall 

Incident where a large number of people prank call one phone number (usually belonging to a business or organization) to interrupt their operations/service. Similar to a flash mob.

The Game allegedly got his twitter followers to flashcall several LA County Sheriff stations, overwhelming dispatchers and deputies while they were trying to find a missing person and several stolen cars.

flashcall by Your Testicles August 17, 2011

Flashcard Obsessive Compulsive Disorder 

FOCD is the term describing someone's need to turn every bit of information written down as notes into flashcards.

Kristen has Flashcard Obsessive Compulsive Disorder. Have you seen her stack of index cards for spanish? It's gotta be half a foot tall!

Flashcard Obsessive Compulsive Disorder by KristenThChitch February 2, 2009

Presidential Flashcards 

(n.)Cash money, dollar bills, dough, moolah, bread.

That kid just asked me to help him with some presidential flashcards

Presidential Flashcards by Nikedunks6.0 December 15, 2009

Presidential Flashcards 

A slang word used for money, due to the presidents branded on dollar bills. Populated by 1996 film "That Thing You Do!"

Pizza Restaurant Owner: *puts money on table* You know what those are?
Lenny Haise: .... Presidential Flashcards?

Presidential Flashcards by HorriblePseudonym July 28, 2015

flashcast 

A single episode on a website that features (often humorous) animated content created in Flash. Flashcasts normally take the form of a cartoon.

Have you seen the latest flashcast at homestarrunner.com?

flashcast by James_Eichele June 4, 2007

flashcash

A quicker way of saying "contactless payment"

I'd like to pay by flashcash please

flashcash by JDNS July 27, 2016