The initial idioms of the letter B

be as fresh as a daisy	be as full as a boot
be more fun than a barrel of monkeys	be as good as dead
be as good as gold	be as good as gone
be as good as (one's) word	be as good as new
be as good as word	be (as) green as a gooseberry
be as happy as Larry sandboy	be as happy as a sandboy
be as happy as Larry	be as hard as nails
be as honest as the day	be like watching grass grow
be like watching paint dry	be as keen as mustard
be as light as a feather	be as mad as a hatter
be as mad as a hornet	be as mad as a March hare
be as nice as pie	be as nutty as a fruitcake
be as/like oil and water	be as old as Methuselah
be as old as the hills	be as clear as day
be as plain as the nose on (one's) face	be as plain as the nose on your face