Leaky Cups

These holes are very small but big enough to leak juice on the counter or down your shirt front. The box of Kroger brand cups made by Dixie had four of these - all on the same pattern of the sail boat. L. threw away the first one he found.
None of the other patterns had the oval shaped holes.
They appear to have been made by a staple or double pronged something! 
(Click to enlarge)