Don't worry your (pretty little) head about it humorous informal
This phrase is mainly used to express annoyance or condescension.
Used to tell someone not to stress about something
A: I'll help you prepare the dinner. B: I am really into cooking myself, so don't worry your pretty little head about it.
Oh, don't worry your pretty little head about it. Just let me handle it.
A great anger or concern about something that is not important
To feel relieved because something bad hasn't happened.
1. To isolate oneself from unwanted thoughts, situations or interactions with people
2. To act in a defensive manner
To be outperformed or outrun by someone, usually by a very wide margin.
You have to be quicker to finish this task or you will eat other my dust.