What does it mean when someone calls you a silly biscuit?

The phrase "silly biscuit" is a playful and affectionate term used to refer to someone who is perceived as charmingly foolish, quirky, or eccentric. It is a lighthearted way of describing someone who is behaving in a silly or amusing manner. The term "biscuit" is often used in British English and carries a sense of endearment similar to calling someone a "silly goose" or a "lovable scamp."

Calling someone a silly biscuit is not intended to be offensive or derogatory but rather to convey a sense of fondness and endearment. It suggests that the person is amusing, endearing, or harmless in their foolishness. It can also be used as a playful way of teasing someone about their behavior or actions.

For example, if a friend is making a series of silly mistakes or acting in a comically exaggerated way, someone might say, "Oh, you silly biscuit, what have you done this time?" This would imply that the person's actions are both amusing and somewhat endearing.