I have many different responces to undiligent siblings.
My favorite at the moment is…
Sibling-I KNOW…
Al-Bob-I know you know that’s why i’m telling you.
HAha…my older brother is starting to like it. 
Do you have any famous quotes…tell me.
I’m not sure if this is famous among the fellow Americans, but most fans of a certain anime should know this one which is considered my favorite.
Serial Killer: “Wh-Why did you save me?”
Cool Guy: “I don’t know why you would kill anyone, but saving someone doesn’t require a logical mind, right?”
Life is like a box of chocolates, because you never know what you are gonna get
and
Stupid is as Stupid does.
Well, I say “Join the club” (which came from a movie that I don’t remember) as a replacement for “me too”. And I say showtime a lot, and a couple of more quotes from the Incredibles.
Sometimes it’s just necessary to throw in a “That’s what she said.” [I don’t even watch The Office]
I tend to quote Mean Girls quite often. Usually, “It’s like ESPN or something!” But if the person I say it to hasn’t seen Mean Girls, then I just look dumb.
There’s a big sticker on my car that says MAKE LOVE NOT WAR.
Sometimes I say, Frankly I don’t give a D_ _ _ from Gone With the Wind, the most popular movie-one-liner. I haven’t even seen gone with the wind. 
Edited by TSS (Keep it PG Okay? 
)
I admit to saying ‘to use a parlance of our times’, from The Big Lebowski. Sometimes, I’ll lapse into chav speak (‘wateva minger!’) or internet speak (‘lolz, ultimate fail! Roffle!’) when speaking with my friends, but I assure you, it’s all used in an ironic sense.
I tend to make up my own lines (“Don’t act like that’s weird!”) but sometimes I say stuff like “Are you sure this waters sanitary? It looks questionable to me!” and “How many people are on this ship?” “964!” “And how many escape pods are there?” “2!”
“Really.”
(Based off the SNL skit regarding Michael’s Vick’s run in with the law at a miami airport. Look it up on youtube.)
“Yippee ki yay, mamacita!” Yes, I’m a Die Hard fan, but I self-censor myself whenever I can, so I loved the way Alvin did it in the Alvin & The Chipmunks movie.
“Don’t slow down! Speed up! Stay above fifty!” I usually utter this to annoy my bro and to profess my love for my fave action-movie of all-time, Speed.
“Ooh…yeaahh…” Lightning McQ. Enough said.
“Good evening, com-mis-sioner…”
“Goood eveeening, ladies and gentlemen…”
“And here…we…GO!”
Need I explain? First two used for informal greetings. Last to express extreme excitement for any big event about to happen.
I’ve said before that I quote all kinds of things! Here’s a few I’ve used quite often recently:
“Bring in the press, why dont you? What a photo op! The councilman and his wacky pal!” -Joker, Mask of the Phantasm
“It seems the Bat is getting warm…Getting warm I said!..He’s next to a volcano!”
“Oh! ha. ha, ha, ha”
“Alright, that’s enough nobody likes a brown nose” -Joker and his crew, Justice League, Wild Cards
“Al, what are you doing? Why are you bringing me into this?” -Genie, Aladdin
“This is a battle of nerves between John & me”
“John hasnt got any”
“What?”
“Nerves” -Norm & Shake, A Hard Days Night
“Though I may not agree with what you say, I will fight to the death for your right to say it” - Voltaire
My sister and I have been quoting various lines from numerous films every day of our lives since we were… ohhh… I don’t know… ten years old (or younger)? Usually we’ll use movie quotes in context, such as when we’re refering to a particular event and want to use a piece of dialogue from a feature to back it up. For example:
Say that my sister and I are trying to think up a new way to… cut an apple or something. If I think of it first then I might quote King Julien from Madagascar and go, “Yes, I thought of that! I thought of that! Me! I did!”
Yeah, we do stupid stuff like that all the time. The name of the game is to make ourselves laugh as hard as possible.
Other than that, I don’t really have one “famous” quote that I say regularly. I repeat movie quotes often, but that’s pretty much it. Heheh.
– Mitch
Let’s see… none that come to mind. But my sister and love this Adult Swim show called Tim and Eric Awesome Show Great Job!, and sometimes quote Dr. Steve Brule. “Ya turkey!” “Ya doofus!” “Ya dum-dum!” But those are pretty obscure so no-one else really knows what we’re referencing.
Hahaha… I’ve watched their other show called , Tom goes to the mayor ?, I love the BassFest episode!
As for quotes,
“I reject your reality and substitute my own”
- Adam Savage
“When in doubt C4”
-Jamie Hynemen
“Holy Shnikes”
-Chris Farley
I know there’s more, just can’t think of um’ all right now?
“Let’s go, Barbie go!” In a higher pitched voice- “Let’s go, Barbie go!”
Saw it on an advert for Barbie scooters and then used it in school the next day when trying to make my friends go to their next lesson. We’ve been quoting it for about 3 months now.
I’m sorry , 'm afraid I can’t do that.
That’s what she said.
I love the office but I think Michael is really annoying in the new season, plus they need new writers… (new season obviously)
or sometimes i say
Evil will always triumph over good because good is dumb.
from spaceballs at this one girl who keeps insisting that im being a bully to her (because i was laughing at her when she slipped in some sand while chasing my friend that one time)
and then she tells me that i admit im evil. XD XD XD
“As long as your going to be thinking, THINK BIG” - Donald Trump
My bro and I like to quote the line “I CAN’T SEE!” in the same tone as said in Aladdin and the Cave of Cheeseburgers, whenever we cannot view something, or just out of boredom. AatCoC is one of the funniest Disney dubs ever! Although you may want to watch out for the naughty words… I’d rate it a PG-13.
Just skip to 00:51 of Part 1 to hear it.