These are random anecdotes about male idol groups running around boards. It's like a compilation of fan account summaries. Some might be real, some might be not, they're just funny to read and share.
There are several parts to the series so I'll translate them up as a nice break from T-ara...
1. L. Joe always said that a man's hand must be moisturized ㅋㅋㅋ A fan went to the fan signing and shook his hand and said that his hand was very sweaty ㅋㅋㅋㅋ
2. Chunji wanted to get closer with SHINee's Taemin so the members pushed him towards his front but he was too shy to say anything so he walked back ㅋㅋ
3. An Angel told C.A.P. that he looked like an octopus and C.A.P. asked back in a serious tone, "And why is that?" ㅋㅋ
4. They say that Changjo puts on a straight face when Ricky tries to do aegyo on him ㅋㅋ
5. On UFO, someone asked TEEN TOP who their favorite girl group was and they replied Big Bang ㅋㅋ
6. Jang Dongwoo accidentally went into the girls' bathroom and met Hyosung in there ㅋㅋ
7. L used to be a fashion terrorist who wore mountain boots with his school uniform ㅋㅋㅋㅋ
8. Sungjong slept with a teddy bear at night because he was scared but Sungyeol took that away to make fun of him ㅋㅋ and Sungjong responded by swearing at him ㅋㅋ
9. Sunggyu always came in last place when they raced during pre-debut.
10. Chanshik likes to eat hand cream.
11. On UFO, a fan messaged Baro, "I miss Baro, right baro (now)!" and he responded, "I'm eating a banana right now and I miss Banas too."
Fan: "Lee Junghwan!!"
Fan: "Sandeul oppa!"
13. A fan's father saw CNU and commented, "He'd be handsome if he took off his glasses and cut his hair, why is he like that?" ㅋㅋㅋㅋ
14. B1A4 went to the sauna because Jinyoung gained 1 kg...
15. Baro's school uniform consists of a vest but Baro would come to school wearing a zip up hoodie instead of it.
Teacher: "Where's your vest?"
Baro: "In my bag."
Teacher: "Then put it on before you go in to class."
Baro: "It's actually at home...."
16. Since Baro's real name is Cha Sunwoo, his friends at school would call him Cha! Cha! Cha! (cha also means car or kick in Korean) Whenever one of his friends called out Cha! all of his other friends would go and kick him. Baro got sick of it so he made a rule saying they could only kick him five times a day.
MC: Your hat looks expensive, where did you buy it?
Baro: Da...iso.... (Daiso is a low-end/cheap Japanese store)
MC: Oh, you smell really nice, what cologne do you use?
18. A nuna fan bought Baro hot chocolate.
Fan: Baro, do you drink coffee?
Baro: Yes! I can!
Fan: Really? Nuna didn't think you could drink it so I got you hot chocolate.
Baro: No, I can!
Nuna: What's your favorite?
Baro: Mmm... Ca↗ramel Macchi↗ato
19. On 'Shikshin King', Baro asked Jung Jun Ha what he was supposed to call him, and Jung Jun Ha replied, "Of course you're supposed to call me hyung, what were you going to call me?" and Baro said, "Ahjusshi...."
20. At a fan signing, a male fan went up to Jaejoong to get his autograph. Jaejoong looked at him and said, "A male fan? You look really cute (informal tense)" and that male fan replied, "Jaejoong-ah, I'm your hyung." After that, Jaejoong got shy and just quietly gave him his autograph.
21. This is a story about just a Cassiopeia fan. One time she was walking down the street when she saw a bunch of delinquents approaching her. She wanted to act like she was Japanese and didn't understand them so she said really fast, "Doushite kimi wo suki ni natte shimattandarou." What was surprising was that one of the delinquents understood it and told the others, "Yo, she's asking how she came to like you?"
22. At a fan signing, a fan asked Junsu to draw a heart at the end of her name. Instead of drawing it next to her name, he drew it next to his. "From. Junsu♡"
Source: Nate Pann 1, 2, 3
Next up is SS501, Super Junior, SHINee, U-KISS..etc. I will take anecdote requests for specific idols because you can just Naver 'idol name anecdotes' and get a lot of compilations made by k-fans.