open a can of worms

Значение

to start dealing with something that causes many new problems

Затронуть то, что вызовет массу новых проблем.

Примеры

1. 1Asking about the old family argument at dinner would open a can of worms.
2. 2The new rules on working from home have opened a can of worms for managers.
3. 3Checking one invoice opened a can of worms: dozens of payments had gone to the wrong accounts.
4. 4If we question one result, won't we open a can of worms and have to recheck every exam?
5. 5Nobody wants to discuss the parking spaces again, because it'll only open a can of worms.

Грамматика

Меняется только open: opens, opening, opened. worms остаётся во множественном числе.