The term 'Jaunty Lid' is a phrase used to describe two different types of headwear. The first is a BERET, which is a soft, round, flat-crowned hat that is typically made of wool or cotton and is often associated with French culture. The second is a TAM, which is a type of knit cap that is usually made of wool and has a close-fitting crown and a brim that can be turned up or down. Both of these hats are often worn in a jaunty manner, meaning they are tilted to one side or the other, giving the wearer a stylish and confident look.