Get naked in the bathroom

Jessica could practically feel the urge building inside her as the minutes passed on, and couldn't focus on the movie too much. With one minute to go, she got her things, whispered "Bye John, see you later!", and got up to leave before hearing anything John had to say.

Jessica needed a giant jerk-off session after everything that had happened. So, she ran to the bathroom and into a stall, practically ripping her clothes off and letting them fall on the floor, not particularly caring if any of them fell to the next stalls over. She sat on the toilet and rubbed herself, caring more about speed and hoping she could come before the bell rang than any semblance of quietness or subtlety.

Her speedrunning strategy, as it were, worked; she came with a yell and a flood of fluid just as the bell rang and people started to file out of their classes. In her refractory period, however, she just sat and slumped over the toilet, her legs a bit weak and her mind still not particularly caring what went on outside the stall, with several people moving in and out of the bathroom, or even on the floor within it. It wasn't for a good several minutes that Jessica regained her senses, and resolved to clean herself up and get dressed.