Idiom meaning, usage examples, facts

1. I thought I was doing a fine job until I was fired because the boss didn’t like my work. I sure got it in the neck.
2. Frank thought they were the best of friends. Then one day for no apparent reason, she stopped speaking to him. He really got it in the neck

The it in the expression probably refers to a foot or fist. The expression suggests getting kicked or hit in the neck.