on all fours
on one's hands and knees
I dropped a contact lens and spent an hour on all fours looking for it. The baby can walk, but is on all fours most of the time anyway.
I got down on all fours to look for my contact lens.
all ears
listening eagerly and carefully
I'm all ears, waiting to hear your latest excuse for not getting this job done!
The kids were all eyes, taking in every detail of the new house.
When John told them about the circus, the boys were all ears.
All cats are gray in the dark.When in the dark, appearances are meaningless,
since everything is hard to see or unseen.
all the rage - very popular or in fashion at the moment Can you remember when disco was all the rage and we'd go dancing all night in the clubs?
