This song replaced "Boom Boom Pow" at #1 on the Hot 100. The Black Eyed Peas thus became the ninth act in the history of the chart to succeed itself at the summit.

I gotta feeling...
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling...
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling... (Woohoo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling... (Woohoo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

Tonight's the night
Let's live it up
I got my money
Let's spend it up
Go out and smash it
Like Oh My God
Jump off that sofa
Let's kick it OFF

I know that we'll have a ball
If we get down
And go out
And just lose it all
I feel stressed out
I wanna let it go
Let's go way out spaced out
And loosing all control

Fill up my cup
Mazel tov
Look at her dancing
Just take it... OFF
Let's paint the town
We'll shut it down
Let's burn the roof
And then we'll do it again

Let's do it
Let's do it
Let's do it
Let's do it
And do it
And do it
Let's live it up
And do it
And do it
And do it
Do it, do it
Let's do it
Let's do it
Let's do it

Cause I gotta feeling... (WoooHooo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling... (WoooHooo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling
Tonight's the night (HEY! )
Let's live it up (lets live it up)
I got my money (I'm paid)
Let's spend it up (Lets spend it up)
Go out and smash it (Smash it)
Like Oh My God (Like Oh My God)
Jump off that sofa (Come On! )
Let's kick it OFF

Fill up my cup (Drank)
Mazel tov (La chaim)
Look at her dancing (Move it Move it)
Just take it... OFF
Let's paint the town (Paint the town)
We'll shut it down (Shut it down)
Let's burn the roof (Woooooo)
And then we'll do it again

Let's do it
Let's do it
Let's do it
Let's do it
And do it
And do it
Let's live it up
And do it
And do it
And do it
Do it, do it
Let's do it, let's do it, let's do it
Do it, do it, do it, do it

Here we come, here we go
We gotta rock
Easy come, easy go
Now we on top, feel the shot
Body rock, rock it don't stop
Round and round, up and down
Around the clock

Monday, Tuesday, Wednesday and Thursday
Friday, Saturday, Saturday to Sunday

Get, get, get, get, get with us
You know what we say (say)
Party everyday, party everyday

And I'm feeling (WooHooo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

I gotta feeling (WooHooo)
That tonight's gonna be a good night
That tonight's gonna be a good night
That tonight's gonna be a good good night

Woohoo

I GOTTA FEELING= I think (=I’ve got a feeling, an intuition)

GONNA= going to

LIVE IT UP= have a wild time (=live life fully)

SPEND IT UP= spend all of it (=spend the money fully)

LET’S KICK IT OFF= let’s start right now (having fun)

A BALL= a party (dancing)

GET DOWN= dance

FILL UP MY CUP= give me a lot of energy, make me happy. (here UP is, again, “fully”)

MAZEL TOV= I read this is Yiddish (the language of Israel) and it means “congratulations” or “good luck”.

LET’S PAINT THE TOWN= Let’s have a wild time

WE’LL SHUT IT DOWN= We’ll party until the night’s finished (I think)

LET’S BURN THE ROOF= Let’s have a wild time (yea, again)

AND THEN WE’LL DO IT AGAIN= (the wild time, again)

Well, and they still say many more strange things (some of them I have no idea), but you get the notion now: they wanna have fun, fun, fun  :-)

They wanna have fun, fun, fun.