In the first drawing the woman has collided with another cart in the grocery store, so she would ask forgiveness of the person she hit. In the second drawing the boy is trying to squeeze between two carts and would ask them to please excuse him and let him through. In the third drawing the man is stating he likes the selection of foods the woman is suggesting to him.

Drawing 1: Perdón Drawing 2: Con permiso. Drawing 3: Con mucho gusto.