Getting around his parents' attention (and the network's censors), Ross crafts an absurd yet effective alternative to the middle finger, later adopted by the whole group.

The quintessential hangout spot, every fan dreams of curling up on the couch coffee in hand to hear the latest news from the gang.

All of Phoebe's Central Perk songs are golden, but chief among them is this iconic tune: "Smelly Cat, Smelly Cat / What are they feeding you?"

Ross' insistence that he didn't cheat on Rachel during a tumultuous period in their relationship often involves him exclaiming, "We were on a break!" The phrase was quickly adopted by men worldwide.

The group's nudist neighbor from across the street almost becomes a part of the group himself as their glimpses of his life (Ugly Naked Gal!) develop throughout the series.

Joey's pickup line catchphrase, "How you doin'?" sounds silly but still remains kinda sexy.

Phoebe may hate Pottery Barn at first but that darn cute apothecary table makes her (and us) converts.

Monica does her best to cheer up Chandler after accidentally dropping a knife on his foot. The best part? Chandler tells her he loves her for the first time. Fez and sunglasses-adorned turkey heads can only bring joy and love.

If Monica knows something, she's definitely going to let you know. Emphatically.

In a valiant attempt to teach his son Ben about Hanukkah without losing Christmas spirit, Ross attempts and fails to rent a Santa Claus costume. He instead takes on the persona of Santa's Tex-Mex friend, the Holiday Armadillo, the best Christmas animal after Rudolph.

Could Chandler BE any more hilarious for his awkward rhetorical phrasing? No, but his friends are even funnier when they imitate him.

Ross and Monica's middle school brother-sister dance routine ranks high on the list of so-bad-it's-good TV moments.

Phoebe's alter ego, sometimes doctor, businesswoman, and sorority girl Regina Phalange, has become almost as iconic as Phoebe Buffay herself.

Monica, Phoebe, and Rachel hanging out with beer, popcorn, and wedding dresses encapsulates a perfect girls' night in scenario.

Ross' unique brand of karate, excuse us, kara-tay, works better as a concept than in practice. Just see Ross after his encounter with self-defense-trained Rachel and Phoebe.

Chandler's on-and-off girlfriend Janice has a distinctive (super annoying) voice and an even more distinctive (super quotable) expression.

Rachel gets so excited when Emma says her first word. "Gleba" may not have been a well-known word then, but it sure is now...even though we still don't know what it means.

Ross, Monica, and Chandler go see Hootie and the Blowfish because that's exactly what people with disposable income did in 1995.

Emma ended up with reconciled parents but started out as the result of a one-night stand.

Brad Pitt makes an unforgettable guest appearance as Will Corbett in the eighth season Thanksgiving episode, made all the more adorable as he played opposite his then-wife Jennifer Aniston (Rachel).

The Geller Cup is a hard-fought, contentious football event, rivalling the Super Bowl, or at least in the minds of ultra-competitive siblings Ross and Monica.

Phoebe succinctly encapsulates Ross and Rachel's enduring relationship when she calls them lobsters, her version of soul mates.

Mama's Little Bakery cheesecakes are so good, they turn Chandler and Rachel into thieves and cheesecake floor eaters. Can we try some?

Sometimes New Year's resolutions don't pan out as expected. For instance, Ross learns his legs and leather pants do not mix.

Monica rocks an eyepatch after a Thanksgiving mishap and hits it off with her doctor, her ex Richard's son. She also gives an awesome description of her dysfunctional friend group: Ross married a lesbian, Rachel left a man at the altar, Phoebe fell in love with a gay ice dancer, Joey threw a girl's wooden leg in the fire, and Chandler lives in a box.

Baby Emma takes a shining to stuffed penguin Huggsy, much to Joey's chagrin. We want a bedtime penguin pal, too!

Pro tip: Don't say the name of your ex-girlfriend in your vows to another woman at your wedding.

Shouting "Pivot!" when carrying furniture up and down flights of stairs is now a prerequisite to the moving process.

Phoebe yells at Ross and Monica's mom to pick up baby Emma's sock so her friends can continue their toast to her. Unlike everyone else, Phoebe doesn't feel intimidated by Judy Geller. Go Phoebe!

Ross and Joey accidentally nap together. Then they intentionally nap together to recreate the best nap they've ever had. It's only weird when they make it weird.