Your brother's car ran out of gas, so he called you to ask if you'd come pick him up. You're annoyed, so you say:
You're a real pain in the neck, you know?
You're talking about a social networking site with your family. Your husband asks a question about it, but calls it by the wrong name. You think he did that on purpose. You say to your daughter:
He likes to act like he doesn't know anything about it.
criticism, family, personality, 日本語サポート 
Your daughter is packing for a weekend vacation. She's packed two large suitcases and a backpack.You think that's too much. You say:
I find it hard to believe that you're really going to need all that luggage for just 3 days.
You're sitting at home with your husband. You notice that his hair is getting long, and it needs to be cut. You ask him:
When was the last time you got a haircut?
You see that your friend has a tablet computer. You don't like tablet computers because you don't think that they're useful for anything. You want to tell your friend your opinion, but you know that it might annoy him for you to criticize his device. You say:
No offense, but I just don't see what the point of those is.
controversy, criticism, offense, opinion, set phrase 
At work, a software designer made a design for a new product. You saw some problems with the design, so you talked to him about the problems. He got angry and fought back against each point. Now you're telling another coworker about it. You say:
Albert got all defensive when I commented on his design.
anger (topic), casual, coworker, coworker (topic), criticism, gossip, simple past, work 
You and a friend saw a teenage couple making out on the street. You don't think they should do that. You say to your friend:
That kind of behavior is not appropriate in public.
You're commenting on a news story about the President of your country. A lot of the other commenters are saying bad things about the President, but you still like him and think that he can accomplish good things. You write:
Everybody seems to be critical of the President these days, but I still believe in him.
Internet comments, President, accomplishments, criticism, news, politics, recently, support You watched a movie. You weren't able to enjoy it because you thought the characters and the setting were to unrealistic. You're discussing the movie with your friend, and you say:
It just wasn't very believable.
"Just not" expresses the feeling that, even though you want something to be true, it's not true in reality. There's a phrase that was made famous by the TV show "Sex and the City", and later used as the title for a movie:
Being "into" someone means that you like them a lot. This sentence was told to a woman who was worrying about why a man who she'd gone on a date with hadn't called her back. When she heard "He's just not that into you," it convinced her to stop worrying about it.
The word "believable" can be used to describe a story that's realistic enough for you to accept. When you see or hear it, it makes you feel like it could be real (although you know that it's not real). "Believable" is mostly used to talk about stories like movies, TV shows, and books. The opposite of "believable" is "not believable". You've probably heard the word "unbelievable", but that word means "amazing" or "wonderful", so its different from "not believable". People don't use the word "believable" to talk about stories, explanations, or descriptions of real events. When someone describes a real-life event and you think that it might be true, you say that it "seems plausible":
That seems plausible.
When it seems like it probably isn't true, you say that it's "not plausible":
Yeah, he says that they agreed to pay him five thousand dollars, but that just doesn't seem plausible.
You're watching a movie about a guy who lives in New York. The character is a waiter at a restaurant, but the apartment he lives in is big and new-looking. You know that New York apartments are really expensive, so you don't believe that the character could afford such a nice apartment. You say:
Is that supposed to be his apartment?
This phrase is used to criticize things. When you don't think something is good enough or realistic enough, you say "Is that supposed to be ___?" For example, if someone compliments your hair cut, but says it in a way that actually sounds rude, you can respond:
Is that supposed to be a compliment or something?
Or when someone tries to make a joke, but the joke offends you:
Is that supposed to be funny?
You can use "this" with the phrase as well as "that":
What, is this supposed to be a nice restaurant? If you ask me, it's way overpriced and not all that good.
