Lame duck
Last but not least
Last straw
Lend me your ear
Leopard can't change his spots
Let bygones be bygones
Let sleeping dogs lie
Let the cat out of the bag
Let your hair down
Let's rewind
Level playing field
Like a chicken with its head cut off
Link rot
Link farm
Liquor someone up
Little devil!
Little bird told me
Little fish in a big pond
Load of cobblers
Load of codswallop
Loaf of bread
Long in the tooth
Loose cannon
Lord Fred
Lose your head
Lose your touch
Lot on your plate
© Gary Martin