Puck:

Puck:
The rain in Spain stays mainly in the plain!

Finn:
I think he's got it! I think he's got it!

Puck:
The rain in Spain stays mainly in the plain!

Blaine:
By George, he's got it! 
By George, he's got it!

Finn:
Now, once again where does it rain?

Puck:
On the plain!
On the plain!

Finn:
And where's that soggy plain?

Puck:
In Spain! In Spain!

Puck with New Direction Boys:
The rain in Spain stays mainly in the plain! (Finn: Bravo!)

Puck and Finn with New Direction Boys:
The rain in Spain stays mainly in the plain!

Puck with New Direction Boys:
The rain in Spain!

Mike:
In Hartford, Hereford, and Hampshire...?

Puck:
Hurricanes hardly happen.
How kind of you to let me come!

Finn:
Now once again, where does it rain?

Puck:
On the plain! On the plain!

Finn:
And where's that blasted plain?

Puck:
In Spain! In Spain!

Puck with New Direction Boys:
The rain in Spain stays mainly in the plain! (Puck: Hahahaha!)
The rain in Spain stays mainly in the plain!

Finn:
Now once again, where does it rain?

Puck:
On the plain! On the plain!

Finn:
And where's that blasted plain?

Puck:
In Spain! In Spain!

Puck with New Direction Boys:
The rain in Spain stays mainly in the plain!
The rain in Spain!
The rain in Spain stays mainly in the plain!
The rain in Spain!
The rain in Spain stays mainly in the plain!