What would be the best way to write the rspec in a situation where either of two (or more) outcomes are acceptable?

Here's an example of what I want to do. This is obviously wrong (I think), but it should give you the gist of what I'm trying to accomplish:

it "should be heads or tails" do
  h="heads"
  t="tails"
  flip_coin.should be(h || t)
end

And yes, I'm aware I could write my own rspec matcher "should_be_one_or_the_other(option1,option2)", but that seems a bit much - I was hoping for a better solution.

ruby rspec
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