People want to hear them again and again… and again.

These are lines that in most cases eventually become overused.

A true catchphrase can be relied upon to be said frequently throughout the run of a show.

Jim Parsons as Sheldon Cooper in “The Einstein Approximation” episode of ‘The Big Bang Theory’

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Viewers grow to anticipate them and studio audiences and laugh tracks explode when the catchphrase is said.

It’s a singular line that can propel an actor to stardom.

10"Bazinga!"

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Sheldon was not big on social skills, and despite his intelligence, he could be quite childish.

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9'‘How You Doin’?''

into an iconic pick up line.

Matt LeBlanc as Joey Tribbiani, sitting in the driver’s seat of a car

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Although Joey didn’t say it until Season 4, “How you doin'?”

fast became his trademark.

Latka was based on Kaufman’s Foreign Man character, one of the highlights of his stage act.

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Latka’s interactions withhis angry, sleazy boss Louie De Palma (Danny DeVito).

But it was the sweetness that Kaufman displayed as Latka that sitcom fans will always remember.

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7"Did I Do That?"

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The character of Harriette Winslow (Jo Marie Payton) originally appeared on the ABC sitcomPerfect Strangers.

“He said it when he ruined the prom.

He said it when he burned down a diner.He said it when he disrupted countless other situations.

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The line helped the character skyrocket in popularity,which inevitably led to backlash from others in the cast.

In the series, Mork comes to earth on a mission to study its people and life in general.

He lived in modern day Colorado with a young woman named Mindy (Pam Dawber).

Andy Kaufman as Latka Gravas and Danny DeVito as Louie De Palma in Taxi

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They started as friends and ended up married in true sitcom trope fashion.

Mork spoke English but also in his native language of Orkan.

“Nanu Nanu was an Orkan greeting, usually accompanied by a Spock-like hand gesture.

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Williams is remembered for so much more, but Mork remains an important part of his legacy.

Along with I Love Lucy, it’s arguably the most beloved sitcom of the ’50s.

Many episodes revolved around a money-making scheme, as Ralph was always chasing success.

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Ralph Kramden had a short temper but a big heart.

He had a few catchphrases, some of which would not fly today.

As a master of empty threats.

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But he was all bark and no bite.

Ultimately, his love for Alice always came through.

The two had great chemistry andDiff’rent Strokes.The adorable Coleman quickly became a break-out star with his impeccable comic timing.

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The Hall Of Fame catchphrase was a happy accident.

In theDiff’rent Strokespilot,the line written was “What are you talking about, Willis?

“- but Coleman delivered it as “What you talkin ‘bout, Willis?”

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Fonzie was the coolest guy in Milwaukee and seemingly the universe.

Happy Daystook a few attempts at making successful catchphrases.

However, the live studio audience would go bananas when The Fonz would say “Ayyy.”

Jaleel White as Urkel in ‘Family Matters’

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As far as cultural impact, it’s hard to get bigger than that.

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1"D’oh!”

Bart’s trademark lines"Eat my shorts” and “Ay Caramba!”

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And no doubt,The Simpsonsbecame funnier in the process.

Homer’s classic line “D’oh!

expresses Homer’s frustration at the situation or sometimes just at life in general… or Flanders.

Robin Williams and Pam Dawber in ‘Mork & Mindy’

Image via ABC

has been heard on movie screens, in video games and from the mouths of talking dolls.

The phrase is plastered on t-shirts, mugs and everything in between.

And best of all, pretty much anyone who has ever seenThe Simpsonshas yelled “Doh!”

Jackie Gleason as Ralph Kramden and Art Carney as Ed Norton in ‘The Honeymooners’ers’

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at least once in their life.

KEEP READING:The 10 Best Sitcom Siblings, Ranked

Steve Carell Michael Scott shrugging toward the camera in The Office

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Gary Coleman as Arnold Jackson smiles with his hand on his chin on ‘Diff’rent Strokes’

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Henry Winkler as Fonzie on water skis and prepares to jump the shark

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Happy Days

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Homer Simpson reacts with a “d’oh!” in ‘The Simpsons’

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