Apologies everyone that it took so long for me to complete the dare, life's been a bit mental, but I have finally completed my torment (and thats putting it lightly).
Final totals: 3 days in the same diaper package, 310 squats, 5L to drink in that time, 6 diapers stacked, an extra large pizza and a dose of laxatives.
Day 1: I started my time once my pizza arrived, diapering up before consuming the pizza sprinkled with laxative. Whilst eating I also drunk my first 0.5L of water. The first 2 hours were clean and dry before I finally had to pee, still well within the capacity of my first diaper which I then followed with another 0.25L of water. Another 3 hours passed and my stomach was starting to feel very rumbly but for now I managed to control my bowels and only pee once more, again following with 0/25L of water. Finally the time came....with 65 hours left on my timer. As I lost control of my bowels and looked down at my timer in dismay a torrent of mess flowed out of me, almost filling my innermost diaper within a moment. Stinky and exhausted, I accepted my fate and decided to go for my first messy sleep.
Day 2: Waking up to my own stink very quickly reminded me of the predicament I had put myself in, I grabbed my bottle and proceeded to drink my first litre of the day before once again wetting myself in my now much larger package. Shortly after waking, the rest of last nights pizza decided to make its exit, forcing a lot of the mess from last night through the slits into the next diaper in the package. The rest of the morning was fairly uneventful, with another litre drunk and 2 more wettings. After a lunch time snack I decided to start on my squats before my package made them impossible, and completed 100 (very gross) squats that moved the contents of my package around a lot more than I had anticipated. After a 30 minute break I completed another 50 squats before wetting another time. I spent the afternoon watching cartoons and sipping at my bottle for another 0.75L drunk, and had my evening meal of a double serving of oatmeal thanks to another lost bet. Wetting a final time, I laid down for another stinky night.
Day 3: Realising that I didnt have long before my package would be receiving another addition, I decided to start my day with the final 160 squats which I did over the first hour of the day. All this motion caused last nights dinner to say hello, filling my package enough that I was forced to either waddle or crawl around the house. At this point the smell was getting unbearable so I decided against breakfast. At this point I only had another 1.5L left to drink so I stuck with a few glasses of 0.25L spread out throughout the day, leading to another 3 wettings before I settled down for dinner and my final drink. I had a small portion of chippies for dinner, as to not fill myself up more than I had to and shortly after settled down for another nights sleep.
Day 4: I woke up on the final day earlier than I'd hoped, wanting to sleep through a few more hours on my timer as I now still had 12 hours remaining. I spent the morning avoiding as much movement as possible as my package (and the smell, oh god the smell) was rather unpleasant. After 12 hours of a movie marathon, it was finally time to release myself and clean up, an event that was so abhorrent that I will not describe it here. Thank you all for everyone that participated in the thread, I hope the report makes up for how long it took me to complete. Any suggestions for future add threads are welcome, but it will certainly be a while before I endure anything for this amount of time again