very happy. From the
phrase happy as a
clam at
high tide, which comes from the
fact that clams, considered a delicacy in America, are gathered only at low
tide. In other words, a
clam would be happy at
high tide because it would not be being gathered for food.
—SHSBC Binder 20 Approved Glossary, —SHSBC Binder 23 Approved Glossary, —SHSBC Binder 32 Approved Glossary