hundreds and thousands
Synonym discussion
Sense: noun/1
These terms all refer to small sugar confections used for decorating baked goods, but they differ by region and shape. 'Hundreds and thousands' is the standard British term for tiny round coloured sugar beads. In the US, 'sprinkles' is the general term and can include both round beads and longer stick shapes; 'nonpareils' refers specifically to the tiny round beads; and 'jimmies' are the long, thin chocolate or rainbow strands often used on ice cream. In Britain, 'vermicelli' describes the longer strand-shaped sprinkles. If you ask for 'sprinkles' in the UK, people will understand you, but 'hundreds and thousands' is the more traditional and widely recognised term for the small round kind.
Common collocations
Etymology
The phrase 'hundreds and thousands' was first recorded in the mid-19th century and comes from the visual effect of scattering tiny sugar beads onto a cake — the sheer number of individual pieces creates the impression that there are hundreds and thousands of them. The term likely originated as a playful exaggeration used by confectioners and home bakers, and it became the standard British name for this type of cake decoration.