Play of Words

Do you know the connection between the expression A HARROWING EXPERIENCE and agriculture, between BY AND LARGE and sailing, between GET YOUR GOAT and horses, or between STEAL YOUR THUNDER and show business? You probably have heard the comparisons HAPPY AS A CLAM, SMART AS A WHIP, PLEASED AS PUNCH, DEAD AS A DOORNAIL - but have you ever wondered why a clam should be happy, a whip smart, punch pleas...