How can I prevent people from seeing comments I make on other people's facebook profiles?

[Mooch]

This seems to be a new development in Facebook's antics. Let's say that I have Jack and Jill as friends. Jack does not know Jill, and they are not each other's "friends" on facebook. Let's say Jack posts a status about a football game, and I make a comment on it. Then, two minutes later, Jill clicks the comment I made as a comment she "likes". How can Jill see the comment I made on someone's wall who isn't even a friend of hers?

Now, you might say, why do you care what Jill sees? Are you keeping secrets from her that only you and Jack know about? Perhaps; what if I want to buy Jill a birthday present and I ask Jack if she would like a new pair of sunglasses? Yes, I know I could PM Jack about it, but is there a way to make comments I make on other's walls private except to people THEY are friends with?