Everybody's having a real good time
The man you're talking to is not yours, he's mine
Better chill out, hear what I'm saying
Before I stop the music playin'

It's my party, I'll start it, I'll end it
Baby, it's my party, I'm upset and offended

While I'm all alone, and the party's goin' strong
It's a celebration, to better our relation
A sudden flash in my vision
Rendezvousin' in the kitchen
Kit got lost, and I found him all involved
He was wearing a guilty face
He had his arms around her waist
And lipstick on his face

It's my party, I'll start it, I'll end it
Baby, it's my party, I'm upset and offended

Everybody's having a real good time
The man you're talking to is not yours, he's mine
Better chill out, hear what I'm saying
Before I stop the music playin'

Say you had too much to drink
Lost your head and couldn't think
A sudden flash in my vision
Rendezvousin' in the kitchen
Then you got lost, and I found you all involved
Wearing a guilty face
Had your arms around her waist
And lipstick on your face
Oh, tell me what it is
Ooh, you had lipstick on your face
Oh, tell me what'd you see
Rendezvousin' in the kitchen
Oh baby, what it's gonna be
Gonna stop this music playing
Oh, do you trust in me
It's very plain to see