I think Andrew W.K. said it best when he said.
So let's get a party going (let's get a party going)
Now it's time to party and we'll party hard (party hard)
Let's get a party going (let's get a party going)
When it's time to party we will always party hard
Party hard (party hard, party hard, party hard party hard, party hard, party hard party hard, party hard, party hard...)