- reaction meaning
- Used to signal curiosity or skepticism about a post, often by users who want to indicate they're fact-checking a claim.
- comment use
- Posted in comments to humorously suggest that someone is being investigated or that their story doesn't add up.
- boomer interpretation
- Older users may use it literally to reference detective shows, mystery novels, or to call someone clever and observant.
- group use
- Appears in true crime, gossip, and neighborhood watch groups when members are sharing tips or investigating local incidents.