Anything that gives off a wrong idea, or sick minded thought
George: "And I'm good at banging. My peg's hard isn't it Zippy?"
Zippy: "Well of course it is, Your peg wouldn't go in if it was soft."
Geoffrey: "Let's get back to Bungle's twanger."
Bungle (excited): "Oooooh Geoffrey, we could all paint our twangers couldn't we?"
Jane: "Ooooh yes, and I was banging away all last night with Rod and Roger."
Roger (looking sad): "Yes, but it broke my plucking instrument."
Geoffrey: "Never mind Roger, let sing the plucking song, come on
everybody get your instruments out."
Rod (to Jane): "Do you want to blow on my pipe while I'm twanging away?"
Jane: "Oh no Rod, I was blowing a lot with Roger last night. But would you
like to play with my maracas?"
Zippy: "No, let's just pluck away with our twangers."
Bungle: "Yes, it doesn't matter what size your twanger is."
Zippy: "I've got a big red one."
George: "I've only got a tiny twanger. But it works well and I like to play with it."
-example from an old kids show Rainbow