When a female, lesbian or not, has extremely short hair (usually a crew cut) and spikes it up. To be a true dyke spyke, it should be easy to mistake them from the back as a guy.
Jane's not a lesbian, but she has a dyke spyke
The stereotype that all girls that play softball are dykes
and are butch-like. The stereotype is kind of true, kind of not. (mostly true though)
"She's such a softball dyke, she loves softball AND girls"