[Verse 1: Katy Perry]
You change your mind like a girl changes clothes
Yeah, you PMS like a bitch, I would know
And you overthink, always speak cryptically
I should know that you're no good for me

[Verse 2: Katy Perry]
We used to be just like twins, so in sync
The same energy now’s a dead battery
Used to laugh (Used to laugh) 'bout nothing ('Bout nothing)
Now you’re plain (Now you're plain) boring (Boring)
I should know (I should know)
That you're not gonna change

[Chorus: Katy Perry]
'Cause you're hot, then you're cold
You're yes, then you're no
You’re in, then you’re out
You're up, then you’re down
You're wrong when it's right
It's black and it’s white
We fight, we break up
We kiss, we make up

[Post-Chorus: Katy Perry]
(You) You don't really wanna stay, no (Oh)
(You) But you don't really wanna go, oh (Oh)
You're hot, then you're cold
You're yes, then you're no
You're in, then you're out
You're up, then you're down (You)
[Breakdown: Redfoo, Katy Perry & Sky Blu]
L-M-F-A-O
Someone call a doctor
Somebody call a doctor

[Verse 3: Sky Blu]
Nice to meet you, I'm Doctor Blu
And I'ma tell you two what you gotta do
Communication is key and that's what the problem seems to be
Katy, you're mad 'cause he's hot n cold
What you gotta understand that he's on the road
Performing every night, livin' show to show
Being out on the stands where you need to grow
Foo, you gotta show that ya care
Not just smackin' her ass and pullin her hair
Take her to dinner, take her to a play
Show her you love her
Dude, that's gay!
It's not like you need something special everyday
You can work it out, work work it out
Work it out, work work it out
Work it out, work it out

[Bridge: Sky Blu]
Work it out, w-work it out
Work w-w-w-w-w-w-work it out
Work it out, w-work it out
Work w-w-w-w-w-w-work it out
Work it out, w-work it out
Work w-w-w-w-w-w-work it out
Work it out, w-work it out
Work w-w-w-w-w-w-work it out
[Verse 4: Redfoo]
You, on my mind
All the time, like my fro (work work it out)
And girl, I love you
More than you'd ever know (work work it out)
But why do you always need attention
When I'm hangin' with the gang?
Jesus Christ, I'm sippin' on a brew!
And I'm tryin' to watch the game!

[Chorus: Katy Perry]
'Cause you're hot, then you're cold
You're yes, then you're no
You're in, then you're out
You're up, then you're down
You're wrong when it's right
It's black and it's white
We fight, we break up
We kiss, we make up

[Post-Chorus: Katy Perry]
(You) You don't really wanna stay, no (Oh)
(You) But you don't really wanna go, oh (Oh)
You're hot, then you're cold
You're yes, then you're no
You're in, then you're out
You're up, then you're down