WHIP YOUR BUTT

Georgia,

I take it that you are asking about  the figurative of the expression. Here we go:

My sister whipped my butt in Chinese checkers 4 times in a row. I didn't even have time to think and the game was over.

- Beat/win mercilessly.

JUST HANG IN THERE

To go forward even when it is hard to do so

When trying to get a return at a store, you must hang in there because they will not let you have your way easily.

or

We win many of life's rewards by learning how to hang in there and work till the very end.

smiley963.tripod.com/motivational.html‎

CAN'T CATCH A BREAK

" I have to mow  the lawn, take the trash out, and now you tell me I still have to make dinner for your whole family? I can't catch a break, can I?

or

He caught a break when the police officer decided not to write me a ticket.

http://www.idiomquest.com/learn/idiom/catch-a-break/

GO EASY ON SOMEONE