boil some water, and cook any type of pasta, as you usually would, when the pasta is nearly done, get a can of tuna, drain it, and put it into a big mixing bowl. The tuna will come in big chunks, so chop it down into small bits. Once the pasta is done drain it and add it into the mixing bowl with the tuna. mix the tuna and pasta and then add the mayonnaise and mix it all together and your done. You could eat it on its own as a snack, or with something else, for example my faverioute thing to have it with is a baked patato.