christmas tree debri

So this past Christmas my apartment had a real Christmas tree. It was the first time I've ever had a real tree, my parents just went with the artificial ones. But since we had this real one we could smell and touch it, which I admit to doing quite a lot since it was my first time. However, when Christmas was over it became old and hard and even started shedding it's pines all over the floor. So my roommates threw it away and cleaned up the floor causing the pines to disappear. Now this is the strange part; it seems that the Christmas tree has walked back into the apartment and we somehow have a bunch of pine needles all over the floor again. Don't ask me how, because I have absolutely no idea. It's just one of the many unexplainable things with COLLEGE LIFE.