Imagine having to pee while pregnant and out for a walk with Bucky. You'd try to find a bathroom in time but before you can the baby kicks your bladder and you pee yourself. Super embarrassed, you blush really hard, burying your face in your hands before Bucky ushers you into a bathroom. 'I'm so sorry Bucky' you say, feeling gross but he just kisses you and tells you not worry about it, that it happens and he doesn't care, before buying you dry clothing. You clean up smiling.