SNSD's come back already yoohoo~! 
Here you go, this song is ear catching. Just contact me @ tara.dianagri@gmail.com

*
                        Em G                              D          C
[Taeyeon] Let’s go! Mwol geokjeonghaneunde neon
          Em G                D          C
Dwaetgo, mwoga tto duryeounde?
                    Em G                   D          C
[Seohyun] Jaego tto jaeda neujeobeoryeo
Em               G       A                C
Oh oh ooh woh.. oh oh ooh woh

**
            Em                                D                 C
[Sunny] Maeil haruga dareuge buranhaejyeo ga
            Em                                   D             C
[Yoona] Apseo ga jugil barae geu nugungaga
                      Em        G                D             Am
[Jessica] Neon moreun cheok nuneul gamneun
        C                                   D                 
You bad bad bad boy, you so bad (bad bad bad)

***
         Em                           Bm
[All] Deo dangdanghage neon 
         Am                               C                                D
Mr. Mr. ([Yuri] nal bwa) Mr. Mr. ([Yuri] geurae baro neo neo neo)
Em                           Bm
Nal gaseum ttwige han 
     Am                                                   C                                D
Mr. Mr. ([Tiffany] choegoui namja) Mr. Mr. ([Tiffany] geuge baro neo)

                Em                    Bm                Am
[Taeyeon] Sangcheoro kkaejin yurijogakdo
                                C                  D
Byeori doeneun neo Mr. Mr. Mr. Mr.
             Em                 Bm                                      Am
[Tiffany] Nareul bitnaejul [Seohyun] seontaek badeun ja!
                                          C    D
[Tiffany] Geuge baro neo Mr. Mr.

(Mr. Mr. Mr. Mr. Mr. Mr. Mr. Mr.)

*
[Jessica] Wae neon ajikdo mitji motae?
Jinjja! bimireul allyeojulge
[Tiffany] Neon wae teukbyeolhan Mr.Inji
Oh oh ooh woh.. oh oh ooh woh

**
[Sunny] Mirael yeoneun yeolsoe baro niga gajin geol
[Sooyoung] Sonyeonboda deo keun kkumeul kkeureoana
[Yuri] Bitnan nun sok nal damgoseo
My mi, mi, mister, rock this world (world world world)

***
[All] Deo dangdanghage neon Mr. Mr. ([Hyoyeon] nal bwa)
Mr. Mr. ([Hyoyeon] geurae baro neo neo neo)
Nal gaseum ttwige han Mr. Mr. ([Sunny] choegoui namja)
Mr. Mr. ([Sunny] geuge baro neo)
[Tiffany] Sangcheoro kkaejin yurijogakdo
Byeori doeneun neo Mr. Mr. Mr. Mr.
[Jessica] Nareul bitnaejul [Sunny] seontaek badeun ja!
[Jessica/Sunny] Geuge baro neo Mr. Mr.

(1. 2. 3. 4.)
(Hey.. Hey.. Hey.. Hey..)
(Mr. Mr. Mr. Mr.)
(Hey.. Hey.. Hey..)
[Tiffany] Wooh!

***
([Sooyoung] Jigeum sesang ane) [Jessica] oh, ne ape
([Sooyoung] Nuguboda meonjeo) [Jessica] neol deonjyeo
([Yoona] Deo chiyeolhage) [Taeyeon] deo chiyeolhage
([Yoona] Mr. Mr.) [Taeyeon] mister
([Yuri] Ojik geudaemani) [Tiffany] irwonael
([Hyoyeon] Dan hana) [Tiffany] naeil apui neo
([Hyoyeon] Geu ane sara gal neowa na) [Tiffany] mister~ oh~


[All] Deo dangdanghage neon Mr. Mr. ([Hyoyeon] nal bwa)
Mr. Mr. ([Jessica] geurae baro neo neo neo)
Nal gaseum ttwige han Mr. Mr. ([Hyoyeon] choegoui namja)
Mr. Mr. ([Hyoyeon] geuge baro neo)

-Overtune-
[Seohyun] Sangcheoro kkaejin yurijogakdo
Byeori doeneun neo Mr. Mr. Mr. Mr.
[Taeyeon] Nareul bitnaejul choegoui namja!
Geuge baro neo Mr. Mr.



Lyrics by: http://www.kpoplyrics.net/snsd-mr-mr-lyrics-english-romanized.html#ixzz2uhGlSygJ 
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来源：www.ultimate-guitar.com