- “I love my sister, but she can be a real bother sometimes.”
- “Oh, tell me about it.”

tell me about it - I have had the same experience.
Usage notes: said in reaction to someone else's statement, as in the example

- Do you get your kicks from this sort of thing?
- I get my kicks from Billy Simpson. What a great entertainer!

get one's kicks (from someone or something) - to get pleasure from someone or something

- "Dean, I've watched you die a few times now, and i can't ever seem to stop it."
- "Well, nothing's set in stone."

set in stone - no longer changeable, can't be changed

"You can't expect an entire economy to snap out of the doldrums overnight."

snap out of it - suddenly recover; to recover quickly, esp. from depression, anger, or illness.
This expression is also put as an imperative.

Snap out of it! telling someone to return to his or her normal state of mind from an undesirable condition such as grief, self-pity, or depression.
Example: "Snap out of it, Stella; it's over and done with."

"It beats me how he managed to survive for three weeks alone in the mountains."

It (that) beats me - something that you say when you cannot understand something (often + question word); I do not know or understand.

Usage notes: often said in answer to a question:
- "How should we explain this?"
- "Beats me."

"He didn't just flip out and start shooting, he planned to kill them."
" The first time I saw that film, I absolutely flipped out."
"After a sleepless night, Wally simply flipped out."
"I felt like I was going to flip out from the steady dripping of the faucet."

flip out - to lose control of oneself; to suddenly become excited, frightened, or crazy.

"I'm sorry I can't go with you on your new plan."

go with (on something) - to take the side of someone; to be of the same opinion as.

"Wilbur decided to cut and run when he heard the police sirens."
"As soon as I finish what I am doing here, I'm going to cut and run. I've got to get home by six o'clock."
"He had learned as a boy that there is a time to stay and fight and a time to cut and run."
"When his business started to fail, he decided to cut and run, rather than face financial ruin."

cut and run - to run away quickly; to avoid a difficult situation by leaving suddenly; to escape.

This term originally (about 1700) meant to cut loose a ship's or boat's anchor and sail away in a hurry. By the mid-1800s it was being used figuratively.

"He's had the hots for Sue ever since he first met her."
"He's got the hots for that new girl Libby."

to have the hots for somebody - to be strongly sexually attracted to someone.

Usage notes: sometimes used in a humorous way that is not sexual: "Consumers have the hots for DSL Internet connections."

"Jane is organized. She really gets all her ducks in a row right away."
"You can't hope to go into a company and sell something until you get your ducks in a row."
"The government talks about tax changes but they won't fix a date or an amount - they just can't get their ducks in a row."

get one's ducks in a row - to organize things well; to arrange everything that you need in order to do something.

This idiom probably comes from the popular fairground game in which you must try to shoot a line of plastic ducks in order to win a prize. A number of expressions in English come from the colourful world of fairgrounds.