do exactly what it says on the tin

1.
British EnglishInternationalinformalidiomatic
- To perform, function, or behave precisely as described or advertised; to match the stated description or label without surprise or complication.
2.
British EnglishInternationalinformalconsumer/product
- To be straightforward and reliable in use or purpose, offering no hidden features, drawbacks, or misleading claims.

Examples:

No examples available.