Lyrics:

This song is dedicated to all you sixteen year old girls out there
You know, when all those boys come around askin' y'all for a date
You just gotta sit back and be cool and tell 'em one thing
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
Come back tomorrow night, and try it again
You say you love me, but you can't come in
You say you love me, but you can't come in
You say you love me, but you can't come in
Come back tomorrow night, and try it again

You say you love me, but you can't come in
You say you love me, but you can't come in
You say you love me, but you can't come in
Come back tomorrow night, and try it again
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
Come back tomorrow night, and try it again, yeah

Now, in this next bit here, I want everybody to sing along with me
It's very easy, all the boys gotta sing, 'You keep a-knockin''
And all the girls gotta sing, 'But you can't come in'
You got that?
Let's try
You keep a-knockin' (but you can't come in)
You keep a-knockin' (but you can't come in)
You keep a-knockin' (but you can't come in)
You keep a-knockin' (but you can't come in)
You keep a-knockin', but you can't come in
Come back tomorrow night, yeah
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in, yeah
You keep a-knockin', but you can't come in, oh yeah
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
Come back tomorrow night, ow
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
You keep a-knockin', but you can't come in
You keep a-knockin', (but you can't come in) yeah
You keep a-knockin', but you can't come in
Come back tomorrow night, and try it again