Idiom - Work your socks/tail/ass off

Work your socks/tail/ass off:

To work very hard.

We had to get the job finished by Friday, so we worked our socks off to get it done on time.

The sales team worked their tails off this quarter, and they've managed to beat the record for first-quarter sales figures.

Persian: سخت کار کردن

Vocabulary - Moon

Moon:

US To expose one's buttocks in order to insult or amuse someone.

Patrice turned around, dropped his pants, and mooned us. We all agreed he's got a nice ass!

Teenage boys think that mooning people is really funny.

Vocabulary - Caboose

Caboose:

(slang) The buttocks.

She's got a nice caboose.

Try not to ogle my caboose as I walk away. (Amy, The Big Bang Theory)

Vocabulary - My Ass

My Ass:

A way of expressing disbelief.

Poor bird, my ass. He’s foxy bastard. He thinks he’s a Jew - The Wall by Jean Paul Sartre

Vocabulary - Radar Ass

Radar Ass:

This happens when your body knows when you are getting close to home and automatically wants to expel all feces in short order.

Holy crap we are still 10 minutes away from getting home and i have a turtle-head poking out, must be my radar ass kicking in again.

Vocabulary - Moon Landing

Moon Landing:

A moon landing is when two people's naked butts bump as they bend over. 

Two men in a gym locker room bend over at the same time while facing away from each other and their naked butts bump:

"Oh, oh my gosh! I'm so sorry!"

"What? Was that your first moon landing?"

Vocabulary - Spark in My Ass

Spark in My Ass:

A sudden burst of positive energy; determined; a feeling of invincibility. 

In the morning, I awoke with a spark in my ass, so I decided to run two miles, at the high school track.