Law of unintended consequences
Lead someone up the garden path
Left hand doesn’t know what the right hand is doing
Leopard can’t change its spots
Let the best be the enemy of the good
Let the chips fall where they may
Let the devil take the hindmost
Let the genie out of the bottle
Let the grass grow round your feet
Lie low
Life is just a bowl of cherries,
Light at the end of the tunnel
Like a rat deserting a sinking ship
Like collecting frogs in a bucket
Like giving a donkey strawberries
Like green corn through the new maid
Like nailing jello to the wall
Like watching sausage getting made
Little strokes fell great oaks
Lock the stable door after the horse has bolted
Look after the pennies and the pounds will look after themselves
Looks like we’re the last dogs hung
Lord willing and the creek don’t rise
Lower than a snake’s belly in a wagon rut