A dictionary of Confusable Phrases: More Than 10,000 Idioms and Collocations

that’s what you say • you said it
that’s what you say —(also: says you) is used to show one’s
disagreement or scorn of the other speaker’s opinion: “They
aren’t going to go to the police.” “That’s what you say.”
you said it—(also: you can say that again) is used to show
strong agreement with what another person has just said:
“That sure was a good show.” “You said it!”
there are no two ways about it • you can’t have it
both ways
there are no two ways about it—it is certain or definite; there
is no other possibility: The company is slowly going bankrupt
and we’ll have to look for another job. There are no two ways
about it.
Note: 
The expression is not antonymous in meaning to the
phrase there are more ways than one to kill a cat—(also:
there’s more than one way to skin a cat) there is more than one
method to do smth.: I can marry the person I want, I guess.
And if I can’t do it here, well, there are more ways than one
to kill a cat.
you can’t have it both ways— one can’t have both of two
incompatible things or situations: It was the Pentagon PR
machine that’s turned you into a millionaire. Maybe you don’t
like everything they did, but you can’t have it both ways.
there are too many chiefs • there are too many
cooks
there are too many chiefs —there are too many bosses and
not enough people to do the work (in allusion to the saying
“too many chiefs and not enough Indians”): The problem with
this organization is that there are too many chiefs.
there are too many cooks —is used to say that when too many
people try to manage smth. they spoil it (in allusion to the say-
ing “too many cooks spoil the broth”): If there is a problem, it’s
that there are two separate committees. In other words, there
are too many cooks.