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A combination of the names Yonghwa and Seohyun who participated in the We Got Married song mission. They're both korean musicians. Yonghwa is from the band CN Blue and Seohyun is from Girls Generation. Their song "Banmal song" has become quite popular since their appearance on the TV broadcast.
Unnie: "Have you seen the YongSeo episodes of We Got Married?"
Noona: "No I spent all of yesterday watching Running Man!"
by war_goddess13 December 17, 2013
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Jul 26 Word of the Day
Noun: a friend who is usually only called upon by a friend when a more primary/prominent friend is unavailable.

Taken from the term “second string” in an athletic competition situation. In football, if the star quarterback gets injured during a play, the second string is called off the bench to replace him/her. A “Second String Friend” is essentially benched until needed, if ever.

Synonyms: Plan B, Second Choice, Secondary Friend, Benched Until Needed
I got a call from X the other night. She had an extra ticket to a concert she bought for a friend, but they couldn’t make it so she called me to ask if I wanted to go because I am her Second String Friend.
by Deus-ex-machina August 26, 2020
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