Note: I had to ask it why people in the photo are laughing.

In the image, Barack Obama, the former U.S. President, seems to be playfully posing as if he's trying to add weight while another official, who appears to be former UK Prime Minister David Cameron, is standing on a scale. Obama's gesture, where he's putting his foot forward as though trying to press down on the scale, suggests a playful attempt to make Cameron appear heavier. The lightheartedness of such a playful gesture, especially in the context of world leaders typically engaged in serious discussions, is a break from formality, which is likely why others in the vicinity are laughing. The scene captures a candid, informal moment amidst what might have been a formal setting or meeting.