The time I laughed really really hard

One time I laughed really, really hard that milk came out of my nose and it caused a laughter chain reaction, with my friends who were present at the time. It happened when I was in the 5th grade and our immature minds found the dumbest things funny. I can't exactly remember what was the trigger of all the laughter; however, all I can remember was the aftermath. It was during lunch time, and one my friends said one of the funniest things I had ever heard at the time, and I had an instant reaction to the joke. The cafeteria was then filled with my laughter and I laughed so hard that the milk I drank prior to hearing the joke began to come out of my nose. That didn't do much to the quell the noise we were making, because my friends began laughing violently soon after. My friend sitting directly in front of me laughed so hard that he actually farted, which just caused us to laugh even harder. We had laughed so hard that we our eyes began to water, and when we finally quieted down our cheeks were very sore.