take the cake
(also take the biscuit) to be worse than anything else you can imagine

[TahlilGaran] Dictionary of Contemporary English ▲

take the cake
[British, American & Australian, British & Australian]
if you say that something someone has said or done takes the cake, you mean that it was very bad, and even worse than things they have said or done before.
She's been opening my letters - that really takes the cake!

[TahlilGaran] English Idioms Dictionary ▲

take the cake
to be the best or worst of something
The woman's manners take the cake. They are very bad.

The behavior of the young girl takes the cake. It is terrible.

[TahlilGaran] English Idioms Dictionary ▲

take the cake
v. phr., slang
1. To take the first prize; be the best; rank first.
Mr. Jones takes the cake as a storyteller.
2. To be the limit; to be the worst; have a lot of nerve; be a very rude, bold, or surprising action.
I let Jack borrow my baseball and he never gave it back. Doesn't that take the cake?
For being absent-minded, Mr. Smith takes the cake.
Compare: BEAT ALL.

[TahlilGaran] English Idioms Dictionary ▲