thats my class, everyday at lunch time. we have this tradition, being followed for the last four years, of sitting in two long straight rows facing each other, the early-birds getting the back rest. the linear arrangement doesn't allow one to talk to more than four people on either side, but food gets passed to everyone. if someone's packed lunch is green veggies, then the dabba (tiffin-box) usually switches hands through the entire group and reaches back to its owner without considerable reduction in quantity. pizzas, pasta, sandwiches, sweets, paneer (something like cottage cheeze) etc on the other hand don't reach more than three pairs of lunch-ers beyond the origin.