"You know, things, life, what not"
Like the geek in the teen classic Sixteen Candles, who owns the quote above, sometimes you simply need a movie line to express an attitude.

Intimidating: "Ferocious, aren't I?" (Heat)

Insulting: "You … look like your face fell in the cheese dip back in 1956." (They Live)

Self-indulgent: "I want to take a swim in lake me." (Full Frontal)

Defensive: "I could have. I chose not to. I'm not hung up on this completion thing." (The Big Chill)

Jerky: "It's not that i'm lazy, it's that i just don't care." (Office Space)

Cocky: "Tonight, i'll be the super me." (Singles)

"Sorry, goose, but it's time to buzz the tower": Tom Cruise said this to his wingman in Top Gun, and you can announce this to your reluctant friends when they want to end the evening too early. Fact is, some lines work better with a wingman, someone who can complete the scene with you for maximum dork effect.

When you arrive at your neighborhood card game, you go through this dialogue from Rain Man:
"Rain man?"
"Yeah?"
"Let's play some cards!"
"Yeah."

Another good one is when you and a friend close the car door as you're about to embark on whatever weekend journey lies ahead, you must pay homage to Jake and Elwood Blues:
"It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark, and we're wearing sunglasses."
"Hit it."

When someone asks you for an answer to a question that confuses you, say, "yeah, 220, 221, whatever it takes." (Mr. Mom)

When anyone gives you an even more tempting offer after you’ve already said no, you tell them, “Actually, it’s really more of a guideline than a rule.” (Ghost Busters)

Anytime someone looks at your nutty friend and says, “Oh, my gosh, what is he doing?” you quote morpheus: “He’s beginning to believe.” (The Matrix)

A line that women can employ often: “Be a man. Don’t be a guy.” (Say Anything)

From that same movie, and good almost anytime: “You must chill! You must chill!”