An Alaskan Sunrise is when you fuck a girl in the ass, and pull out as you cum. The cum resembles that of the majestic Alaskan foothills, resting under the colorfully pink pussy, or sun, as some would call it.
Condescending Coworker: "Have you ever been to Alaska? I hear they get a lot of snow this time of year, which is perfect for visiting our ski cabin in Anchorage."
You subtly one upping: "My wife gets an Alaskan Sunrise every morning!"