Do you qualify for the mile-high club if you have sex on Mount Everest?

—B.W., Portland, Oregon

We’d give you credit, but you might piss off the Sherpas—and the mountain. The Buddhist guides don’t take kindly to anyone “making sauce” on Chomolungma, as they believe it insults and angers the mountain (same with killing animals, getting drunk and burning trash). One photographer caught during a private moment with his girlfriend told National Geographic Adventure that a Sherpa warned, “The weather is bad, and I think you are adding to it. No taki-taki on the mountain.” But at least one summiteer says the raunchy Sherpas are half kidding and themselves sometimes hook up with Western women during expeditions. In 2004 a professor of international relations at New Zealand’s Victoria University of Wellington received a $1,400 grant from the school to organize a rally at the Everest base camp as an exercise in building a global social movement. He hopes to show support for Sherpa efforts to counter the “most spiritually erosive effects of mountain tourism,” including sex.

Is it normal to get an erection in an airplane during descent and landing? This happens to me every time I fly.

—D.B., San Diego, California

This isn’t unusual; any good vibration that tickles your balls, whether from a plane, train or automobile, can trigger arousal, and of the three, a plane looks most like a massive sex toy. To avoid embarrassment, lay your coat or newspaper across your lap and let everyone else get off first (the plane, that is). Some argue that adrenaline contributes to air arousal, which occurs in both men and women, but we suspect anticipation also plays a role as the earth rushes toward you. As in sex, anticipation plus vibration equals foreplay—with the ground.

It is my belief and unrepudiated claim that I and two Canadian women have shattered any previous depth record for human sex by having a ménage à trois at 2,660 feet—just over half a mile—below sea level in the Idabel, a tourist submersible that I built, own and pilot.

—Karl Stanley, Stanley Submarines, Roatán, Honduras

Bruce Jones, president of U.S. Submarines, who builds luxury subs for private clients, says a number of the few dozen people in the world who own two- or three-person submersibles have told him they’ve had sex while submerged but typically at no more than 1,000 feet. Because some small subs can dive to 20,000 feet and may soon be able to reach 36,000 feet, Jones suspects that within a few months two or three people will become charter members of the mile-low club, if they haven’t already. However, until a wealthy submariner makes a public claim, Captain Stanley and his passengers appear to have bragging rights.

For answers to reasonable questions relating to food and drink, fashion and taste, and sex and dating, write the Playboy Advisor: The most interesting and pertinent questions will be presented in these pages each month.