Abstract: A drink-through lid for a beverage cup. The lid seals the open end of a cup containing liquid. A lower section and upper section are rotatably affixed for use, and detachable for cleaning. The lower section and the upper section each have liquid and vapor passageways therethrough. Each of the lower section and upper section include a coupler which enables the upper section and lower section to rotatably move with respect to the other. A first coupler in the lower section may be a downwardly extending annular cylinder having an inner circumferential sidewall. A second coupler in the upper section includes a first prong and a second pron. The first and second prongs each extend downward from a lower engaging surface of the upper section. A registration system is provided using detents and positioners, and bumps and bump seats, to provide haptic snap action between open and closed positions.