Perhaps
The answer to any question that you don't know the answer to.
In many cases, it leaves the person in a state confused bewilderment when you answer with it.
Person: Wanna go get some food?
You: Perhaps.

Person: Hey, do you know what the time is?
You: Perhaps.

Person: Do you love me?
You: Perhaps.

Exam question: What's 10 x 3?
You: Perhaps.

Police: Did you kill this man?
You: Perhaps.