Grrrr I am getting angry on your behalf. Let me 'at her...
You open a bag o chips discreetly. Take one out. Place it in your mouth. CLOSE your mouth and take care of it.
You don't rustle in there. Pick a chip or 5 and make sure you hold them 4 inches from yer face and lunge and snap at them quick as you can. crunch crunch mouth open while staring at your next bite.
Like a friggin turtle she is.