Once in a blue moon

Sometimes, it takes cartoons to teach you a (real) thing or two about life.

"I gave you what I thought you wanted instead of what I thought was right. But this is right. It means something to me. And I think it's gonna mean something to others too. 

Once in a blue moon. That means that there are only a few moments in your life, when something truly memorable, truly magical, happens to you. And if you hesitate, or, afraid... you might just miss it."