You're out drinking with your coworkers on a Friday after work. You've stayed for a while, but you need to go home because your wife is expecting you. Your friends want you to stay, but you refuse by saying:
My wife'll kill me if I don't get home soon.
When you say that someone will "kill you" if you don't do something, it's not meant to be serious. It's an exaggeration. It means that the person will be very angry with you and will yell at you.
When you want to describe the action of travelling home, you say "go home". But when you're emphasizing the result, you say "get home":
She's always working late. She usually doesn't go home until seven or eight o'clock.
I want to try to get home before six tonight so I can make Jessie's birthday cake.
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