The translation of huevo in English is egg, but manda huevo is something totally different. When you move to Costa Rica, you will want to communicate with your local neighbors. In their own language of course, not in yours. They speak Spanish. Spanish is a real easy language to learn, if you make an effort.
Just as every language has its own slang terms, “Ticos” use expressions like “pura vida” and “parado de uñas”. Or they yell “upe” when they are visiting someone. Have you figured out what a chunche and what a chorizo is yet?
Many of those expressions are really difficult to translate as they are the essence of a language. It takes a while to master the essence of a language. Once you’re able to express yourself with those slang words, you’ll easily gain the trust of the local community. They’ll know immediately that you are one of them, or at least trying to be. Give it a shot; you’ll be surprised how much fun it is.