The initial idioms of the letter B

beetlebrain	beetroot
beet	beeveedees
beezer	before
before can say Jack Robinson	before could blink
before (one's) very eyes	before know it
before last	before long
before the wind	before (one's) time
before time	before you can say
before you can say "knife"	before you can say Jack Robinson
before you know it	beg, borrow, or steal
beg for	beg from
beg of	beg off
beg on bended knee	beg pardon
beg the question	beg to differ
beg your pardon, but	begin