The 'Conga!' meme finds its roots primarily in the 'Love & War' update for Team Fortress 2 in 2014, where the introduction of the Conga taunt transformed intense shooter matches into spontaneous dance parties. The meme captures the essence of infectious enthusiasm, where one person's action prompts an entire group to drop everything and join in. It is widely used to represent situations where a community or friend group collectively pivots to a new trend, a shared celebration, or a humorous distraction, highlighting the joy of mindless, synchronized participation.