During the era of PRE-DIVORCE WOES, your parents used to bust out INCREASINGLY FRAUGHT MONOLOGUES at each other in there. Picture MOUNTING MARITAL DESPERATION building to an ACCUSATORY CRESCENDO. A MOMENT OF SILENCE; the audience digests the tension with bated breath. Mom storms to the exit punctuating their quarrel with a RESOUNDING DOOR SLAM... and scene.
It probably didn't play out exactly like that. You don't really remember how they used to argue.
But now it's quiet. Too quiet...
Could they be...?