Dunno if you’ve seen this, it’s just a little suggestive…
cgi.lawrence11.plus.com/rainbow-twangers/
That never aired for the kids:
[quote]The “Adult” version
In 1978 the cast and crew of Rainbow made a special edition of Rainbow for ITV staff. This show featured plenty of sexual innuendo and although not shown at the time, it has since been aired for the amusement of those who grew up with the show.
[/quote]
Hahaha, good stuff. I think I’m going to go pluck my twanger now, maybe even bounce my balls.
Or better yet, find someone to do it for you! 
Haha oh I’m searching.
Best of luck with that! 