When to Use
- Sending to a friend when you both notice someone acting suspiciously.
- Reacting to an inside joke or secret between two people.
- Representing the look shared between conspirators during a prank.

Source: SpongeBob SquarePants
Two green and brown fish characters from SpongeBob SquarePants with graduation caps on their heads look sideways with suspicious, knowing, or devious smiles.
Used to express shared suspicion, secret knowledge, or a situation where two people are plotting something mischievous together.