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Inf. Start acting realistically! Hey, chum! You are way off base! Get real! Get real! Wake up to reality!
something that you say in order to tell someone that they should try to understand the true facts of a situation instead of hoping for something impossible Oh, get real! You're not tall enough to be a model.
exclam. Start acting realistically! (see also Get a life!.) Hey, chum! You are way off base! Get real!