1
general::
Phrase(s): Get real!
Inf. Start acting realistically! • Hey, chum! You are way off base! Get real! • Get real! Wake up to reality!
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Be realistic, understand what's going on, as in You think you'll win the lottery if you buy one ticket a week? Get real! [Slang; second half of 1900s]
American Heritage Idioms