as clean as a hound's tooth

Другие идиомы:

• you can't teach an old dog new tricks
• fight like cats and dogs
• rain cats and dogs
• as sick as a dog
• tail wagging the dog
• let sleeping dogs lie
• call the dogs off
• lead a dog's life
• shaggy dog story
• top dog
• put on the dog
• go to the dogs
• dog-eat-dog
• every dog has his day
• in the doghouse