Don't be fooled by his pleasant manner - he's pretty ruthless beneath that nice exterior.
I'm not easily fooled.
You can't fool me!
He fooled a lot of people.
We would be fooling ourselves in thinking that we were appreciating and understanding the art and works of other cultures.
On the other hand, the third-person mode is also, definingly, fooling.
Fooling ourselves with child autonomy and assent in nontherapeutic clinical research.