What is Porch Dyke?
1.
A lesbian with absolutely no social life. Which is why she is a lesbian in the first place. She stays home i.e. the "porch" and dyke's herself out to whoever comes over.
Rachel: "Hey where's Dani?"
Megan: "What? You know that porch dyke doesn't hang out with us anymore."
Rachel: "Oh yeah."
See
