Spoutless drinking cup

A drinking cup comprising:

• a receptacle having an open end and comprising a receptacle rim at the open end, the receptacle defining a liquid chamber within the receptacle;
• a lid assembly configured for releasable engagement with the receptacle over the open end thereof, the lid assembly comprising a lid assembly wall having an inner surface, and an inner ring extending radially inward from the lid assembly wall, the inner ring defining a plurality of fluid passages, the lid assembly further comprising an annular projection extending axially from the inner ring to a free end of the lid assembly, the annular projection and the inner surface of the lid assembly wall defining a receptacle gap therebetween, the lid assembly configured to receive at least a portion of the receptacle rim within the receptacle gap when the lid assembly is releasably engaged to the receptacle;
• and
• a seal assembly configured to be retained by the inner ring, the seal assembly comprising an upper lip,
• wherein the lid assembly and the seal assembly are configured relative to each other such that the seal assembly is resiliently deformable between a sealed configuration and an unsealed configuration, wherein:
• in the sealed configuration, the upper lip sealingly engages the inner surface and fluid is prevented from flowing through a lid assembly volume defined between the lid assembly and the seal assembly, and
• in the unsealed configuration fluid is permitted to flow from the receptacle, through the plurality of fluid passages, and between a gap defined by a portion of the upper lip and a corresponding portion of the inner surface.