Subverted: In the throes of an absolutely desperate Potty Emergency, Alice runs into the bathroom only to find the stall door locked, with an "out of order" sign on it. So she turns around and pees in the sink instead.
Double Subverted: But in trying to pull down her pants while perched on the rim of the sink, she loses her balance, crashes to the ground and finally loses control.
Zig Zagged: Alice carelessly drinks an entire Gigantic Gulp shortly before she has to be a live model for the art class's 3-hour final exam. Belatedly realizing her mistake just when the exam is about to start and knowing that she's just sure to have a humiliating accident if she doesn't relieve herself first, she rushes to the nearest bathroom and steps into one of the two stalls. But before she can start to go, Betty and Claire rush in, both clearly in the middle of an absolutely desperate Potty Emergency. Betty takes the remaining stall, leaving Claire to wait. Between the sound of Betty loudly relieving herself and Claire pounding on the stall doors and telling them both to hurry up, Alice's Shy Bladder simply refuses to let go. Annoyed, she exits the stall and accidentally runs right into Claire, knocking both of them to the ground, and the shock causes Claire to lose control and pee all over the floor.
Brenda is using the toilet when Alice dashes to bathroom door and tells her to hurry up. Brenda calls back that she's almost done, but after a few moments Alice just replies, "Um... you know what, never mind..."
Deconstructed: Alice is publicly humiliated, and will have to walk around in smelly wet clothes.