(as) easy as A, B, C

See: as easy as pie

• kick up a row
• kick up a stink
• kick up heels
• kick upstairs
• kick up the arse
• kick up the backside
• kick up your heels
• be whistling Dixie
• be whistling in the dark
• be wide of the mark
• be wide open
• be wide open to
• be wide open to abuse
• be wide open to [abuse/criticism etc.]
• be wide open to criticism
• be wise to
• be wise to someone
• be wise to something
• be with child
• be within an ace of
• be within an ace of doing something
• be within an ace of something
• be worlds apart
• be worried out of mind
• be worried out of your mind