It is a desperate dash to the bathroom, but Alisha doesn’t quite make it on time.  She starts peeing in her pants before she gets to the toilet.

Extremely desperate to pee, Alisha explodes into the bathroom, already peeing in her pants.  Leaving a trail on the floor behind her, she reaches the toilet, but is powerless to cut off the flow long enough to get her pants down.  Instead, she sits on the toilet, still wearing her pants and underwear, and pees through them.