When do lyrics pass explicit and become profane?

I was listening to The Midnight Hour by Wilson Pickett (the Roxy Music version – excellent).

I’m gonna wait till the midnight hour
That’s when my love comes tumbling down
I’m gonna wait till the midnight hour
When there’s no one else around
I’m gonna take you girl and hold you
And do all the things I told you
In the midnight hour
Yes I am
Ooh yes I am

Is there any doubt as to what he’s talking about?

This is an old song – and nowadays the kids listen to very – very explicit lyrics – I have two teens myself – but hey – is there any other way to interpret this song other than at midnight I’m going to fuck your brains out?

Are these explicit lyrics? Do lyrics have to contain profanity in order to be explicit?

What thinkest thou?