Suit Up! is a phrase regularly spoken by Barney Stinson. It refers to his policy of wearing a suit for almost every occasion. The origin of the phrase and Barney's suiting up is explained in Game Night. After his break up with Shannon, Barney found a suit store flyer bearing the slogan "Suit Up!" Feeling depressed, he took the flyer's advice (and the advice given to him earlier by the man who stole Shannon from him) and suited up for the first time, creating the Barney we know today. In Single Stamina, Barney explains why he and his brother James suit up; "to distinguish ourselves from the millions of T-shirt and jeans lemmings out there". In Girls Versus Suits, Barney performs a musical number detailing his love for suits and suiting up (the lyrics to which can be found here).
Barney mentions Suiting Up on many occassions, and is frequently frustrated by Ted's reluctance to ever Suit Up with him (although, on rare occassions, such as the Pilot and Moving Day, Ted does Suit Up at Barney's request).
Episodes Where Barney Didn't Suit Up
- Okay Awesome: Barney didn't wear a suit to the night club.
- Monday Night Football: Barney does not suit up to go to the funeral.
- How Lily Stole Christmas: Barney is sick and wears something more comfortable
- We're Not From Here: Barney doesn't suit up when posing as tourist.
- The Sexless Innkeeper: Barney only suits up half, wearing sweatpants (Armani) after Lily and Marshall "dumped" him and Robin.
- The Playbook: Barney had to adorn a variety of non-suit costumes to trick women into sleeping with him.
- Girls Versus Suits: Barney didn't wear a suit to get with the hot new Bartender.
- Doppelgangers: Disguised as a cab driver and a street performer, Barney did not wear a suit.
- Lucky Penny: Barney runs NY Marathon in a tracksuit.
Special Suits
Flight Suit
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Barney "flight suit[s] up" for Halloween in Slutty Pumpkin.
(Scuba diving gear)Barney suits up in scuba diving gear for the "Scuba Diver" in the Playbook |
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Penguin Suit
Barney "Penguin Suit[s] Up" in Slutty Pumpkin
Green St Patrick's Day Suit
Barney wears a special green suit to the club in No Tomorrow
Pajama Suit
The suit Barney uses while he sleeps, until the episode The Front Porch when he started to wear a nightgown instead.
Snow Suit
| Barney "snow suits up" in Sweet Taste of Liberty, when building an igloo in Central Park. He unsuccessfully tries to get Ted to join him. | 
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Diamond Suit
| Barney decides to use his Christmas bonus from GNB in False Positive to buy himself a suit lined with actual diamonds. | 
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