- lewdness
- light a fire under
- like billy-o
- law distrain
- locker-room
- leninent
- like a Trojan
- locus
- lineaments
- louse
- loadsa
- low-spirited
- leaving a lot to be desired
- little girls' room
- lose one's rag
- little girls' boys' room
- lay low
- lighthearted
- loadsamoney
- light fire under
- lickety-split
- locoweed
- like a bag of bones anorexic
- locum tenens
- ludic
- little boys' room
- lots
- lick someone's boots
- lame-brained
- lady of the night
- lauded
- lonesome
- lassie
- leave flat
- larrup
- long-headed
- lippy
- laundered
- let the grass grow under one's feet
- lamebrained
- little-bitty
- loose woman
- loo
- like a bear with a sore head
- laugh-a-minute
- lam-brain
- lead up the garden path
- long-faced
- lowdown
- lubberly
- loads
- lav can
- lid up
- light out
- legless
- lamebrain
- lav
- locum
- lame-brain
- like a cat on a hot tin roof
- lolly
- lady of pleasure
- lo
- loopy
- loony
- l.s.d
- loco
- lashings
- lubber
- like a cat on hot bricks
- loathly
- like a dog with two tails
- lummox
- lose one's mind
- lose one's marbles