Here's a part of the lyrics of an old song of 1960s "Johnny get angry". https://www.youtube.com/watch?v=wslyYxN8Nlg
Oh, Johnny get angry, Johnny get mad
Give me the biggest lecture I ever had
I wonder why she says "Johnny get angry" instead of "Johnny gets angry", or "Johnny got angry". The same for Give.
The whole song is a woman complaining that her boyfriend doesn't act macho and aggressive enough. She implores him to tell her what to do, and to start fights with other guys out of jealousy. She is telling him that he should get angry — it is a command, in imperative mood.
Johnny get angry, Johnny get mad
Give me the biggest lecture that I ever had
I want a brave man, I want a cave man
Johnny show me that you care, really care for me
