Define Flashmob Meaning

Flashmob
A flashmob is when a large group of people suddenly come together and perform some sort of action, which draws an audience very quickly. After they perform the stunt, the group of people quickly disperse.

Shay Carl, Kassem G, Lisanova, hiimrawn, mysteryguitarman, denisevlogs, and other people came together at the Planet Hollywood Resort and Casino to perform a huge flashmob. It is one of the best flashmobs on YouTube. The video is called "PHAMOUS PLANET HOLLYWOOD FLASH MOB!", uploaded on ShayCarl's channel.
By Ellette
Flashmob
A group of arts students with far too much spare time on their hands that collectively pre-arrange to "spontaneously" burst into song or theatrical performance in public spaces to annoy the general public.

I would go apeshit if a flashmob ever erupted in my presence.
By Chelsie
Flashmob Rave
A short rave, usually lasting around fifteen minutes. These are often held during finals weeks at universities as a sort of study break.

"I'm so stressed out about finals, I can't wait until the flashmob rave at midnight."
By Cyndia
Facebook Flashmob
In a collective effort, facebook friends of one person steal and adopt his/her profile picture, and each tag the original owner in their new pic. Then the group then likes and comments on everyone's new profile pic, ensuring a barrage of notifications for the target person. Works much better if the adopted picture is in any way scandalous.

Last night while Matt was out to dinner with his parents, 10 of us got him with a facebook flashmob. His phone must have buzzed non stop with notifications!
By Ophelie