He showed us around the house while 'talking nineteen to the dozen'. [=('US') 'talking a blue streak']
People entered the park 'by/in the dozens'. [=large groups of people entered the park]
We'll need a couple 'dozen' hot dogs for the party. [=we will need about 24 hot dogs]
(..) - "Alex" Freed? - That's close enough. Sit down. What do you want? Some clams? They'll fix you some clams. Jerry, bring over two dozen littlenecks. What are you drinking? - Nothing. - Good. You should put some weight on you. You're too skinny. (..)1974 The Gambler