A new trend is taking over TikTok, with users testing their relationships through a viral challenge.
Thousands of users are participating in the "Bird Theory" trend, where they tell their partner they saw a bird and record their reaction.
The trend is not about birds, but about testing the relationship using a method known as the "Bid Test" to gauge the partner's engagement.
The "Bird Theory" trend has gone viral, with countless videos filling up users' feeds.
Author's summary: TikTok's "Bird Theory" trend tests relationships.