Seems that a tribal chieftain's daughter was offered as a bride to
the son of a neighboring potentate in exchange for two cows and four
sheep.

The big swap was to be effected on the shore of the stream that
separated the two tribes.

The chief and his daughter showed up at the appointed time, only to
discover that the groom and his livestock were on the other side of
the stream.

The father grunted, ... "The fool doesn't know which side his bride
is bartered on."