Butterfly
The mouth of an adult butterfly does not have jaws. It has a kind of mouth that sucks liquids. This mouth is made of two hollow tubes. The tubes are locked together in the middle. When the butterfly is not drinking, the tubes are coiled up. It can uncoil them  when it wants to drink. Like all insects, the adult phase is about reproduction. The main eating phase is done by the larvae, which usually eat plant food.