Wirt's Leg? Where's his other one?

Wirt's Leg? Where's his other one?

I found the Wirt's Lef in the last chapter of the Human Campaign of TFT... and i the Editor I saw the "Wirt's Other Leg". Where do I find it? What does those items do together?

They're jokes

From Diablo 2

Just JOKES?? I thought it would take you to the Cow Level as in Diablo, but JOKES??

uh...

but anyway... thanks