To act sheepishly is to show embarrassment, or an uncommon shyness, to the point of calling unwelcome attention to oneself.

• 如果你的举止“像羊一般”（即所谓“羊手羊脚”）的话，那就表示你做事尴尬异常、过分羞怯，甚至乎被人奚落，成为不受欢迎之人。