Abstract: A pour spout for removable attachment to a container wall for efficiently pouring viscous liquids between containers includes a generally flexible exterior member having a pour region and a collection region. The exterior member defines a slot for removably receiving a container wall, the exterior member flexibly conforming to the diameter of the container wall. The collection region is situated adjacent the inner wall of the container wall when attached thereto and is configured to guide liquids toward an outwardly extending pour region and channel. At least one clip is attached to the exterior member in an over-molded construction and is situated in the slot. The clip includes attachment members biased toward each other for securely gripping the container wall when the slot and clip are engaged therewith.