Abstract: A drinking vessel including a mug having a liquid-tight volume therein, a base detachably connected to the mug, and a plurality of lights extending radially outwardly through the base so as to direct light outwardly from the base. The base has a cylindrical portion and a bottom surface. The base defines a liquid-tight volume therein. A power supply is contained within this liquid-tight volume so as to provide power to the plurality of lights. A switch is attached to the base and extends through the exterior wall of the base. The switch and the power supply are electrically connected to the plurality of lights. A sequencer is positioned within this liquid-tight volume so as to control the light actuation pattern of the plurality of lights. The base is in snap-fit connection with the mug. Each of the plurality of lights is a light-emitting diode spaced at even intervals from adjacent lights. The plurality of lights extend outwardly beyond the exterior surface of the base.