The young man looks as though he is in imminent danger, but in fact it is the end of a failed flirtation. He had spoken to both girls in an attempt to woo them, but had no success. The girl on the left is telling him what-for, her finger pointing accusingly and silencingly: she's not going to hear any more from him. Yet she was amused, as was her friend on the right. The back-and-forth was, in the end, all in jest.
