Here's a song published in the early 70's in the book of Bawdy British Folk Songs by Tony McCarthy. .... Definitely a song of its time

Sex and the Single Girl

When I came to Town it got me down
There was no-one that I knew
Till I met Pete, who was kind and sweet
And told me what to do

Chorus
I've tried jumping up and down
I've laced my baths with gin
But it's harder far to get it out
Than it was to put it in

Pete never told me of the ring
The cream or else the cup
Said 'Dont take fright, It'll be all right
If you do it standing up'

So I loved Pete all in the street
And up against the wall
He said 'Just cough when you've had enough
And I swear you'll never fall'

Now truth to tell it all went well
Though I was worried in May
And got in a state, I was well past my date
And didn't know what he'd say

Oh I don't want to be married yet
I don't want to be a wife
And I know he'd have thought that he'd been caught
If I'd tied him down for life
    So I tried jumping up and down
    And laced my baths with gin
    But it was harder far to get it out
    Than it was to get it in

(c)Tony McCarthy September 1971