A straw-feminist is a made-up version of a feminist that doesn't really exist, used in straw man arguments against feminist ideas.
- hate men
- hate sex
- think all men are rapists
- call nearly any violation "rape"
- are Angry feminist mobs
- want women to become systematically dominant over men
- want to outlaw marriage
- are "ugly, hairy lesbians"
- call themselves 'womyn' instead of women
- are strident and overzealous, and see symbols of the evil patriarchy in innocuous things and campaign to have them banned (e.g., wanting to make gingerbread men gender neutral)
These are misrepresentations of most feminist viewpoints, and bringing them up in a discussion is an example of derailment.