Weasel Stomping Day was created on 2006-09-24.
See link below.
Yes. He voiced himself in the "weasel stomping day"sketch.
Stomping at the Savoy was created in 1992.
Stomping Ground was created on 2000-03-28.
Weasel Mania was created in 2005.
I Am Weasel was created on 1997-07-15.
Patagonian weasel was created in 1842.
Wicked Weasel was created in 1994.
Mountain weasel was created in 1811.
Egyptian weasel was created in 1833.
Amazon weasel was created in 1818.
Screeching Weasel was created in 1986.