A simple lipid is a type of fat that does not have any special structures or parts. It is made up of just a few basic pieces, like a big blob with nothing sticking out of it. When we eat foods with simple lipids, like butter or oil, our bodies break them down into smaller pieces that can be used for energy or stored for later. Think of it like playing with play-doh - you can squish it into different shapes, but it's still just one big lump of play-doh. Simple lipids are kind of like that!