The car stutters as your Mom gasps in sudden realisation. Stretching back a grunt, you see an effulgent strain on your Mom's face, followed by a boggy smell in the car. Checking her mirror, your Mom feels the back of her pants in disbelief and you get a glimpse of a soft bulge at the back of her jeans.
'Did you just...'
Your Mom blushes and stares right at you. Nobody else in the car has realised. What do you do?