An inventive pouring spout for containers of liquid, having a removable lid and a strip with magnets located thereon. The spout is selectively attachable and is fitted to the diameter of an opening of a particular container. In a preferred embodiment, the spout is fitted to the diameter of a paint can opening, where it may replace the typical lid of a paint can for the duration of its use. Essentially, the spout effectively prevents the entry of paint in the sealing groove of the paint can or on the sides of the can.