two fingers

剑桥词典

in Britain , a sign that is considered rude , made by holding your hand up with your palm facing towards you and your first and second fingers held in a V shape
（手心曏裡，食指和中指比成V的表示侮辱的）V形手勢
She drove past and stuck two fingers up at him. 她開車經過時，對著他伸出手指作了個V字表示蔑眡。 返回 two fingers