To cut a whole pineapple, cut off the top and bottom, then stand it upright on a cutting board. Use a chopping knife to cut off the skin in thick strips, starting at the top and going straight down. Continue doing this until all the skin has been taken off, and use a paring knife to cut out any prickly knobs that are left behind. Then, keeping the pineapple upright on the cutting board, use the knife to cut off sections, leaving the core intact (discard the core later). Lay the sections down on the cutting board and cut chunks as desired.