Why should_receive failure?

Testing RSpec
1

class PeepCode

def awesome
“awesome”
end

end

describe PeepCode do

it “should fuck” do
PeepCode.new.should_receive(:awesome).and_return(“awesome”)
end
end

Spec::Mocks::MockExpectationError in ‘PeepCode should fuck’
#PeepCode:0xb7aa3bbc expected :awesome with (any args) once, but
received it 0 times
./simple_spec.rb:13:

Finished in 0.006159 seconds

1 example, 1 failure

what’s wrong with my code?