What is Gympie Gympie?

Why "suicide" though? Perhaps if one would attempt by throwing oneself in it, or the pain is so intense, that is what comes to mind.

franny, some people say that the suffering makes people contemplate suicide

and here, I was complaining about poison ivy....

It makes sense being from Australia.

franny, I think that it hurts so bad and lasts so long that you will want to commit suicide!

So the GubbiGubbi call it Gympie Gympie