A large group of douches that walk around in the halls with their football uniforms. They will usually cluster around or in the gym and spray their axe all over the place to attract more.
Oh god here comes another douche swarm. Hold your breath or you'll be attracted to the swarm.
A utility in the video-game Valorant that is used by the character KillJoy as a deterrent that sticks to any horizontal surface. It is basically a molotov.
He won't defuse the spike, there is a swarm grenade on it.