negadose 

Noun that describes how much of an effective ingredient is contained in a dose of homeopathic medicine. An antonym to megadose. If a megadose contains a billion molecules, a negadose contains one molecule. Contrary to certain claims, taking a negadose cannot consist of taking less than nothing.

There is no way that homeopathic remedy can work because the active ingredient has been diluted down to only one molecule, and such a negadose cannot possibly be effective.

negadose by TommH January 12, 2012

Negatosexual 

Someone so sexually repulsive as to negate the possibility of sexual gratification of others, i.e. a male negatosexual turns straight women gay and gay men straight.

Did you see those women scatter? Mike's a negatosexual.

Negatosexual by phenombr January 16, 2009