takes the cake

[keannu]

Does "take the cake" mean something best or worst done so far like the following? What are the similar expressions?

*worst
A:He cheated on this math exam again.
B:He so takes the cake.

*best
A:This soup takes the cake.
B:Do you want to go for another?

rtg-96

[JohnParis]

You're very close to the correct meaning, Keannu, but not quite 100% there. Here is a site that explains the phrase. If you read it and try two new sentences, I'll be happy to check them out.
Take the cake

[BobK]

It's worth noting that in Br Eng the more common form of this idiom is 'to take the biscuit'. (Still, that's how the cookie crumbles.)

b

[Koronas]

Yes, this is a US-only expression. It has no meaning in British English. In Britain we would say "that really takes the biscuit!" Mind you, it's not very commonly used nowadays.

[sara mohammed awad]

take the cake means to be good or outstanding): steal the show
(to be particularly bad or egregious): take the biscuit (British)

[emsr2d2]

I'm a Brit who uses "take the cake" a lot.