From: link

[VERSE 1]
There's only two types of people in the world
The ones that entertain, and the ones that observe
Well baby I'm a put-on-a-show kinda girl
Don't like the backseat, gotta be first (oh, oh)
I'm like the ringleader
I call the shots (call the shots)
I'm like a firecracker
I make it hot (make it hot)
I run a tight ship, even though
I go with the flow
Now here's a hot tip (list-listen in)
Get get a front seat when I put on a show

[Bridge:]
I feel the adrenaline moving through my veins (hah, hah, hah)
Spotlight on me and I'm ready to break (hah, hah, hah)
I'm like a performer, the dancefloor is my stage (hah, hah, hah)
Better be ready, hope that ya feel the same (hah, hah, hah)

[Chorus:]
All the eyes on me in the center of the ring
Just like a circus (ah, ah, ahaha-hah)
When I crack that whip, everybody gonna trip
Just like a circus (ah, ah, ahaha-hah)
Don't stand there watching me, follow me
Show me what you can do
Everybody let go, we can make a dancefloor
Just like a circus (ah, ah, ahaha-hah, ha, ha, ha, ha, ho, ho, ho)

[VERSE 2]
There's only two types of guys out there,
Ones that can handle me, and the mama boys are too scared
But if I brought one down to my lair
He'd never wanna leave, just sit and stare (oh, oh, oh)
I'm like the candy floss
I'm bad for you (bad for you)
I'm just the elephant
In the room (in the room)
And when it's rainin', you can come
Under my big tent
No need for your umbrella (ella ella)
You'll like this better, 'cause it's the big event (ahhh)

[Bridge]

[Chorus]

I been doin' this show all my life
It's part of who I am
Ain't nobody know what it's like
Maybe I'm a slave 4 you but
Baby I love what I do
'Cause I'm the ringleader
I call the shots (call the shots)
Yes I'm a firecracker
I make it hot (make it hot)
I run a tight ship, even though
I go with the flow
Now here's a hot tip (list- listen in)
Get get a front seat when I put on a show

[Bridge]

[Chorus:]
All the eyes on me in the center of the ring
Just like a circus (ah, ah, ahaha-hah)
When I crack that whip, everybody gonna trip
Just like a circus (ah, ah, ahaha-hah)
Don't stand there watching me, follow me
Show me what you can do
Everybody let go, we can make a dancefloor
Just like a circus (ah, ah, ahaha-hah)
All the eyes on me in the center of the ring
Just like a circus (ah, ah, ahaha-hah)
When I crack that whip, everybody gonna trip
Just like a circus (ah, ah, ahaha-hah)
Don't stand there watching me, follow me
Show me what you can do
Everybody let go, we can make a dancefloor
Just like a circus (ah, ah, ahaha-hah, ha, ha, ha, ha, ho, ho, ho)

other Britney Spears lyrics: link