Waving Grin

This face is all smug and friendly at once, like you just won a bet and are offering a truce. Grinning with one eyebrow raised and a waving hand feels cheeky, like you're saying, 'Hey, look at me, but don't get too comfortable.' You'd use it when you're in a good mood but keeping your guard up, maybe during a playful chat or a light-hearted challenge.