What is a "moonbat"?

Question

And where did the word come from?

Answer 1

I remember a Video in the early internet. Its some character

Answer 2

See http://en.wikipedia.org/wiki/Moonbat

Answer 3

The way I would answer this is to go to an online dictionary or wikipedia.com

Answer 4

Moonbat (also "barking moonbat" and "moonbat crazy") is a term often used currently in U.S. politics as a political epithet referring to anyone that is believed to be liberal or on the left. "Wingnut" (or "right wing nut") is frequently preferred as the analogous epithet aimed at the political right[1], as is "Nutbag" (or "right wing nutbag").