Apart from the abbreviated names given by the fans, a few of the couples earned unique nicknames that were officially used in the show.
Alex & Shin Ae
로맨틱커플 (Romantic couple) - Alex's romantic events and antics made them the first of the couples to become vastly popular, even prompting their return to the show (the only couple to do so).
Crown J & In Young
개미커플 (Ant couple) - MC Kim Won Hee remarked in one of the earlier episodes of Crown J's resemblance to an ant because of his skinhead haircut.
A! couple - Crown J's famous inverted upside down 'peace' sign and his exclamation of "A!" in their theme song Too Much.
Hyun Joong & Hwang Bo
쌍추커플 (Lettuce couple) - Hyun Joong's continuous mispronunciation of 'lettuce' (Sshangchu 쌍추 instead of Sangchu 상추) on their honeymoon in Jeju island and throughout the series.
Hwan Hee & Hwa Yobi
개똥부부 (Dog Poopie couple) - At the beach, Hwayobi steps on sand and insists that it was dog poop. An amused Hwanhee dubs her 'Dog Poopie' as a term of endearment.
Marco & Dam Bi
Killer couple - Due to Marco's limited Korean, in the first few episodes he repeatedly uses "killer!" to praise Dam Bi.
Kang-In & Yoon Ji
도토리묵부부 (Acorn Jelly couple) - After their first meeting while passing the Han River, Yoonji remarks how she has always thought the waves remind her of acorn jelly. Kangin says he has always thought the same, much to her disbelief. It is later revealed in a radio interview recorded before they met that he was telling the truth.
Hyung Don & TaeYeon
젤리푸딩커플 (Jelly Pudding couple) - Named due to Hyungdon's nickname "Pudding" and Taeyeon's liking for jelly confectionery (usually jelly worms).
Jun Jin & Si Young
건담 커플 (Gundam couple) - Si Young's favourite toy and television series that she enthusiastically collects and talks about, much to Jun Jin's disinterest.
Park Jae Jung & UEE
캐러멜부부 (Caramel couple) - Dubbed after Jaejung gives Uee a caramel candy at their first meeting.
Jo Kwon & Gain
아담부부 (Adam couple) - Dubbed by Jinwoon and Seulong, initially as "Adam-Eve couple" due to their mutual relationship inexperience, but changed to * "Adam-Adam couple" due to their small appearances ("Adam" is pronounced the same as the Korean term for "little/small").
Yonghwa & Seohyun
용서커플 (YongSeo Couple) - Named by MC's and fans by using the first letters of their names, meaning "forgiveness" because of the intense disapproval after they were announced to be the newest couple.
고구마부부 (Goguma Couple) - Dubbed when Seohyun was to rate the husband by either saying sweet potato (because of her fondness for sweet potatoes) or hamburger (because she finds hamburgers unhealthy).
초딩커플 (Choding Couple) - Dubbed because of their childish jealousy and arguments.
음악커플(Musical Couple) - Dubbed because of their fond of playing musical instruments like guitar and piano.
도보커플 (Walk-around Couple) - Because they are always seen walking down the street instead of riding a car.
기러기부부(Seagull Couple) - Because Yonghwa wrote, "We're always a seagull couple," on the knitting photobook that he gave Seohyun.
Nichkhun & Victoria Song
삼겹살커플 (Samgyeopsal couple) - Named after Nichkhun finding Victoria, where he had to ask what her favorite food was, which was samgyeopsal.
쿤토리아 (Khuntoria) - Acknowledged by Nichkhun and Victoria as their official Korean couple name.
维尼夫妇 (Winnie Couple) - Acknowledged by both as their official Chinese couple name.
("International Couple") - Because they hail from different countries, Nichkhun from Thailand and Victoria from China
("No-Hands Couple") - Because they are often seen performing tasks for each other from eating to washing hands.
Lee Jang Woo & Ham Eun Jung
우정 커플 (WooJung Couple) - Named by MCs and fans by combining the first/last letters of their names respectively, meaning "friendship" due to their friendly nature.
캐임붓 커플 (Campus Couple) - Named according to the same college they are attending currently.
("Pepero Couple") - Named after the many pepero kiss attempts.
("Medical Pad Couple") - Named in their episode 27 where they put medical pads on each other after a long day of shooting.
Kim Won Joon & Park So Hyun:
용감한 커플 (Brave Couple) - They are called brave couple because they've known each other for 18 years and people say that there's "absolutely zero fakeness involved" in the way they treat each other on-cam.
Leeteuk & Kang Sora
("Dimples Couple") - MC Park Mi Sun commented on their second episode that they both had dimples.
(Teukso Couple) - A combination of their first names.
리더부부 ("Leader Couple") - They called themselves the leader couple because Leeteuk is Super Junior's leader, and Sora acted as a leader in the movie Sunny as well.
(Piano Couple) - They showed their piano skills in some episodes of the show and they were both great.