Can of worms
The phrase "can of worms" refers to a complicated or controversial situation that, once opened or explored, leads to further difficulties or complications. It is often used to describe a problem or topic that is messy, intricate, and likely to cause more problems when addressed.
English is confusing! Why do people say "Pardon my French" when they are speaking English? Because of idioms!
An idiom is a phrase or expression that usually presents a figurative, non-literal meaning attached to the phrase. Does that sound fun? It can be!
Play Just Saying - the word game that makes learning idioms a good time on your mobile phone or tablet.