So tired that everything becomes hilariously hilarious

It was 1:30AM in the morning. We had been working on the annual science fair project since 9:15 PM (because we had so much homework). Our project was about if plants will grow faster with classical music and grow slower with rock music. Me my classmate have been working on this project for weeks. But since this was the final day to do the project, we decided to put everything into it to get the perfect mark. We took some coffee at 10:30 PM, when we were still "awake" we learned our texts and presentation by heart. We finally finished our projects at two o clock in the morning. We drank at least four cups of coffee, but that wasn't enough. After the coffee lasted long enough, I was so tired that I couldn't even spell my own name right! I found that so hilarious that i was laughing uncontrollably. My classmate didn't understand why I was laughing so hard, but he didn't cared and joined the laughter chain, anyways. First came the tears, I was laughing for about five minutes straight and came the tears of laughter, my friend only laughed for one minute and I knew the same effects would come to him. The tears came in, and even thinking about them made me laugh. I was laughing so hard and uncontrollably that the coughs came in, my friend also started to cry of laughter. We thought that we were going to wake the whole neighborhood by laughing so loudly and I became worried that we were going to literally die of laughter. I was coughing so much that my stomach became to ache. Unfortunately, we woke my parents up and they wondered what the heck was going on. We told them we didn't understand why we were laughing so hard. My mother looked at the time and understood everything. She said that it was very common and told us it was time to go to bed. This will be for sure one of the most memorable experiences I had with my friend. Awesome!