Noun. Someone who says some stupid shit and believes their right after someone calls them out as being a Dumbass, idiot, retard, Etc.
(Sarah): Please join Todd and I as we prey for the people in Ebola.
(John): Are you a idiot? Ebola isn't a country.
(Sarah): Yes it is.
(John): Are you a Fuck Nut?
A person Being really up tight and on your case allot.Also used for a different word when pissed off at someone.
Why are you all ways in the way...and do you all ways play video games all the time holy fuck...??(P.M.S.)....yes i do play video games all the time Fuck Nut got a problem with it??