Does the Milk Drain Clockwise Here?

Milk is ordered for the student homes by boxes of 5 gallons. Depending on the house, it can take a little over a week for 12 students to drink a full box. However, it takes about 15 minutes to drain a full one into the sink...

(We weren't sure how long the milk had been waiting outside prior to being put back into the "cow"so we erred on the side of caution.)

A "cow." (Photo from here.)