1967. The Operative Word.

  We met in the park

It was one of those nights

The small building was more than

quaintly ornamental

I am a bird

he said

and

I am bait  

how

dutifully I answered

  And the operative word?

Jail

we said together

Then I read him

his rights

I was in blue

and he wore leather

                                                                                                                      Catherine Eisner

Cottage (British slang). A public lavatory when 

regarded as a meeting place for homosexual men.

Cottaging. The practice of anonymous sexual

relations between men in a public lavatory.

(The term arises from public conveniences often
resembling faux-rustic structures created for formal

ornamental gardens of stately homes in the imperial period.)

See also: 

1993 Soho Gay Slayer: Colin Ireland and Art’s Sadomasochistic Cabal.

https://catherineeisnerfrance.blogspot.com/2014/05/ 

See also:

1940 when the blackout of WW2 closed the park gates on a requiem for lost innocence . . .

Here, for example, is a Park
clearly intended for the dark.

 

https://catherineeisnerfrance.blogspot.com/2013/10/the-humbert-in-park-more-palimpsestic.html