Lori and Erica had intended to make the end of their freshman year memorable but initially struggled to figure out how. After some thought, they agreed they'd wait until their last final exam, a class they both had easily attained good grades in, and ensure they desperately needed to poop during the exam.
As freshmen, they luckily only had a few exams, and all but one was scheduled earlier in the week. They had a break of an extra day before their last exam on Friday. This would give them relaxing time to simply fill their bowels and wait to take their last exam, which they knew would be pretty easy and wouldn't take much effort to pass with flying colors. It was the perfect opportunity to stage bowel desperation without it causing a serious problem.
Prep day was their Thursday off, as Lori and Erica struggled slightly to maintain control of their bowels. They were each a bit gassy, and peeing without their poop coming out was becoming increasingly more difficult. Lori was now holding two days, and Erica was holding three days. It would be fun to see how this all played out, as they were both enjoying the desperate feelings they were getting from their bowels, and they still had to survive the night and the exam the next day. Of course, they planned on ending their hold and pooping shortly thereafter before the drive to Lori's parents house, where they planned on spending the summer.
Exam morning came around as both girls woke up to their bowels aching with the need to unload their overdue logs. Both needed to pee desperately too, so that had to be first. Erica, however, needed to clear something up first. "Lori," she asked, "are you as turned on as I am by being this full right now?"
Lori almost too quickly said, "God yes, wanna do something about it before we allow ourselves to pee?"
"I hoped you'd ask," Erica said, doing a sexy little potty dance, "let's enjoy this!"
The next twenty minutes were filled with masturbation fueled by angry bladders and bowels begging for release, and both girls got off multiple times before finally waddling with legs tightly together to the toilets to empty their bursting bladders.
After finally releasing their bladders, the girls got showered and dressed, both in comfy joggers, and went to get breakfast. Their exam was at 10am, so they had plenty of time to relax beforehand. As they sat and ate, Lori farted quite loudly and Erica giggled, "You must need to poop or something."
"Um, yeah..." Lori said as she farted loudly again, "I guess you could say that."
"How badly do you need to go," Erica asked, "can you describe it?"
Lori grunted with a sudden urge from her extremely full bowels then said, "Well, it feels like my bowels are filled with concrete. There's so much pressure. It's moving into my rectum already and I can feel it pressing hard on the inside of my asshole. I've been having to clench pretty hard already this morning trying to keep it in. And every time I fart, it seems to make me have to go worse!"
Erica said with a look that betrayed her feelings before she said them, "That's so hot!" Right as she finished saying this, she farted loudly, and it kept going for a few seconds. She suddenly groaned and shifted uncomfortably in her seat.
"Feel like sharing..." Lori asked, "seems like you need to poop badly too. How badly?"
Erica started, "Well, this has been building up for days. I was already desperate yesterday, now I'm very desperate. It's been prairie dogging since last night, and there's so much pressure I'm not sure how I'm keeping it in at this point. Every time I fart, I feel like I'm going to shit my pants!"
Lori looked so aroused, and simply said, "I think you're incredibly sexy when you're this desperate!"
"The feeling is mutual," Erica said, "I'm quite aroused by your desperation, as well as my own really."
"We just have to contain that feeling for now though," Lori said, "we still need to survive this final in a little while, then we can enjoy our arousal and finally take a much needed shit."
They finished breakfast shortly after, and wandered back to the dorm to make sure they were ready for their final. The dorms were nearly empty, so there were no intrusions or distractions as the girls both fought hard to contain their desperately full bowels. As they sat squirming, Lori farted again. It was loud and deep sounding, like it had been trapped behind her mammoth shit, and Lori suddenly grunted. "God, I need to take a shit so badly!"
"Me too baby," Erica said as she grunted to contain her own load, "I don't know how we're going to make it through that test."
"Too late to back out now," Lori said as she checked her watch, "it starts in barely ten minutes."