Flash mob

/flˈaʃ mˈɒb/

/flˈæʃ mˈɑːb/

Flash mob

a large group of people organized using social media who gather together publicly at an exact time, do something for a short time and then disperse

Examples

1. - Flash mobs are done.

2. They get flash mobs.

3. I love flash mobs still.

4. - It brings volunteers, experts, and resources together like a flash mob.