The two Advertising In-charges (MCs) is one of the popular Japanese Comedians, Chīmonchōchū!
When the MCs wallked in, Jonghyun started teasing about the voice of one of them.
Taemin curiously asked him, ‘Is (your throat) painful?’
MC (the one wearing black) answer, ‘No, it is not pain at all.’
Naughty Key started laughing, and he tried to imitate… ^^”
Key: ’Probably, I may be able to do it too’
Key: ‘Hello! Yes, this is Key!I It is really not pain at all!’
MC: This time round, to have SHINee members to put out their 100% energy and effort, we are happy to give our fullest support!
Question: What is the most essential item during LIVE shows for SHINee?
First, let us have Jonghyun (to answer)!
Jonghyun: Water!I will prepare at ease (slowly) when I drink water before going on stage.
MC: That is right. (Taking care of the) Throat is really important.
Jonghyun jokingly said to the MC:
Do give me some water! (In Polite form)
MC (the one wearing red) played along with Jonghyun and said:
Water water.. faster faster
In the end….
MC (the one in black) said: Is it okay if it is from the mouth?!
-Everyone had a good laugh!-
Video credit: theTONGHYUN @ YT
Screencaps & English Translations: Forever_SHINee 
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[Trans] SHINee on Happy Music (Japan TV) - Revealing the Lucky Item 121013 http://bit.ly/Qtbbv3