The term “Mile High Club” refers to two people engaging in sexual activity (sexual intercourse) at an altitude of no less than 5,280 ft (a mile high above the earth) in an airplane.

Now, most veteran pilots will tell you that you need to be at the controls of an airplane in order to claim membership in this exclusive club. But over the years, the term Mile High Club has included those who make their mark in the lavatories aboard jetliners across the globe.

To spare the embarrassment for those who aren’t quite daring enough to make their way back to the lav on a red-eye or transatlantic flight, mile high operations have been cropping up all over the country, offering couples the chance to climb aboard a custom-outfitted aircraft for their aerial pleasures.