A pop is a photo of a friend.
"Pop" is the antonym of "selfie" (a photo of yourself).
A pop of you is a photo taken by the your friends or paparazzi.
Did you see the pop of Janice sleeping in class?
I just popped you stuffing your face with food.
Everyone was popping Nick last night at his birthday party! It's like he had his own private paparazzi.
A pop refers to a photo of a friend. Pop is derived from the word paparazzi and is the antonym of the word selfie.
Janice was popped by her friends as she was taking a selfie of herself