Some background on this comic:

Transcript:

A few days after this cartoon was published, I started getting a considerable amount of reaction from people who enjoyed it. But I found it interesting that, without exception, they were enjoying it from a different standpoint from the one I had intended. If you look at the enlargement of the two little calves, you’ll see that one of them is doing the old hoof-behind-the-head trick to its sibling. Apparently, it was just too subtle in the original. (In fact, it sort of looks like the one calf is just wearing a ribbon.) I wish now I had developed this into a series of places the Holsteins had visited. (“The Holsteins visit Three Mile Island” would have been interesting.)