Awkward incident in which a peer or colleague confuses a local institution or landmark with a distal one. Hilarity often ensues.
Christina: Hillsdale High is very ghetto. It's only 1% Asian.
Me: ...You're looking at the wrong one. We're in CA, not MI. Good job pulling a hillgate.
Me: ...You're looking at the wrong one. We're in CA, not MI. Good job pulling a hillgate.
by DrakuIa March 31, 2012

Retaliatory reply to a social gaffe committed when an individual, usually someone you hold in high esteem, mistakes your work as something puerile or less significant.
Al sent his girlfriend Amy some pictures of mice.
Amy: "What is that. A fly?"
Al, shaking his head: "Flygate"
Amy: "What is that. A fly?"
Al, shaking his head: "Flygate"
by DrakuIa December 30, 2011
