the stance

This is the Stance. You adopt the Stance in moments of pseudo-anger, like when you ask your girlfriend if she wants toast and she says no but as soon as she smells and subsequently sees the toast that you made for yourself, demands that you surrender some portion of your chargrilled bread snack unto her. Naturally, you don't mind, as it's your girlfriend, but you have to adopt the Stance in order to show your disapproval. Your girlfriend, in turn, adopts the Stance when you act like a fascist dictator in the kitchen or keep forgetting to put money away in an ISA.

To adopt the Stance, you need to put your hands on your hips, then slide them up your body as far as they'll go. This is essentially it, but for added effect you could pout, suck in your cheeks, raise an eyebrow, frown etc. Spend some time getting the hands right, then you can 'freestyle' with the facial expressions...