O.D. : to do or consume too much of something (originally used for drugs but now can be used for anything or any activity).
She's going to O.D. on pizza if she keeps eating it every day at work.
off: 1. finished or cancelled; 2. not working properly.
1. The meeting is off. Devon can't make it.
2. My computer seems to be a little off today.
off the bat: immediately; spontaneously (usually used with "right")
She got married right off the bat after graduating from high school.
okey-doke / okey-dokie: okay; no problem
A: You can put those boxes down right there.
old lady: a man's girlfriend or wife.
I can't go out with you guys tonight because my old lady want to me to take her out to dinner.
old man: one's father.
My old man used to beat me all the time when I was a child. Now there are laws in the U.S. that offer more protection to children, but that kind of thing still happens.
on a roll: continuously successful.
After winning some money at the racetrack and a casino, Trevor feels like he's on a roll.
on edge: nervous; jumpy.
Laura is on edge these days because she thinks she's going to lose her job.
one-night stand: a quick, romantic relationship, sometimes involving sex.
Once Tony tired of meaningless one-night stands, he decided it was time to find someone to marry and settle down with.
on hold: something must wait.
We're going to put our plans for business expansion on hold until we know what the economy looks like in six months.
on the dot: exactly, usually the exact time.
The boss wants us to be here tomorrow at 10 o'clock on the dot.
on the double: quickly; fast.
Come on, let's go! On the double! We're going to be late.
on the fly: to do something without adequate preparation. (this is sometimes not a good thing to do.)
The teacher seems to put her lesson plans together on the fly.
on the hook: responsible for something.
It looks like Tina is on the hook for another parking ticket.
on the line: immediately important.
Our jobs are on the line if we don't start bringing in more business next month.
on the money: exact.
Al Gore's ideas about global climate change are right on the money and confirmed by respected scientists around the world. Too bad the general American public is too stupid to understand the situation.
on the rocks: in a bad situation.
It's too bad that their marriage is on the rocks.
on top of: in addition to.
On top of feeling tired, Sarah is also hungry.
once over, the: to tell someone of his or her faults; to yell at somone for making a mistake.
The police officer gave those teenagers the once over for not wearing their seatbelts.
oops: sorry, my mistake. (you can also say, "whoops.")
Oops! I forgot to lock the door to my apartment.
open up: to tell the truth about something.
After 30 years, Donna is just now starting to open up about the problems she suffered as a child.
or else: the consequence will be negative; something bad will happen if you don't do this.
You'd better clean up your room this afternoon--or else.
other half: the rich.
It would be nice to know what it feels like to live as the other half lives.
out: not popular.
Black has been out as a color for years, but those behind the times continue to wear it.
out of it: not able to concentrate; tired; disconnected.
A: I feel so out of it today.
B: Why is that?
A: I drank too much last night, and now I've got a really bad hangover.
out of line: improper; disrespectful.
No matter what you think of President Bush, it was still out of line and very disrespectful of that journalist to throw his shoes at the man.
out of whack: not working properly; out of alignment.
The transmission in my car seems to be a little out of whack. I need a mechanic to take a look at it.
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