A feminagger is a woman who calls herself a "feminist", opposes all traditional female gender roles, and has been brainwashed with so much subversive critical theory to the extent that they will endlessly nag and argue and cause grief to any masculine man she encounters. Hence she will never be in a healthy relationship with any masculine man, the subversive critical theory working as planned to destroy beautiful male-female harmony and the potential for a beautiful family.

Often a lesbian in disguise; if not then usually very promiscuous. Almost always guaranteed to have daddy issues.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.