Difference between thank you and thanks a lot
The image shows two individuals wearing similar outfits: grey shirts with red scarves and black bottoms. They appear to be standing against a plain wall, with a partially visible red and white poster behind them. Both are performing a gesture which involves placing their palms together in front of their chests, a gesture that is commonly associated with expressing thanks or respect in some cultures.
The person on the left is standing upright and has their head slightly bowed down with their eyes closed, and their hands are positioned at chest level. This seems to be a more casual stance.
In contrast, the person on the right is bending forward deeply at the waist, their head lowered much more than the first person with the hands brought together at the same level in a fashion that suggests a deeper or more reverent bow.
Below the image, there is a caption that reads "Difference between thank you and thanks a lot," implying that the posture on the left represents a simple "thank you," while the much deeper bow on the right represents "thanks a lot." This caption seems to be playing on the idea that the level of gratitude being expressed can be measured by the depth of the bow or gesture.
