What is the collective noun of teenagers?

There isn't one universally accepted collective noun for teenagers.

Here are some options, though:

Informal:

* A gaggle of teenagers

* A bunch of teenagers

* A group of teenagers

* A crowd of teenagers

* A mob of teenagers

More creative:

* A swarm of teenagers (evoking a busy, energetic feeling)

* A hive of teenagers (suggesting a bustling, interconnected group)

* A generation of teenagers (emphasizing their shared age)

Ultimately, the best collective noun to use will depend on the context and the desired effect.