A person who consistently says "no" or rejects every idea or proposition.. Usually a female, but men are nixstresses too, they're called nay-sayers though.
The Nixstress accused Lucas of joke stealing and had him arrested but his charges were dropped as his time stamped jokes clearly pre-ceded her so-called original joke..
The absolutely amazing lead vocalist for the Nashville basedband, Framing Hanley. He used to be in a band with someone else named 'Kenneth' so he started going by 'Nixon' and he still does.
"Hey, did you meet KennethNixon after the framing Hanley show last night?"
Friend: Good time?
Guy: Well, first, she was freaking hairy downstairs, then she made me put on a Richard Nixon mask and rode the nose until she got off.
Friend: Ahh, the old Hairy Nixon, good times.