Dollars and cents, e.g.

• Cops and robbers, e.g.
• Mice, men, etc
• Lice and mice, e.g.
• Ifs, ands and buts, e.g
• Cats and dogs
• Stars and stripes, say
• Mice, men, etc.
• Lice and mice, e.g

Wiktionary Word definitions in Wiktionary
n. (plural of plural English)