Wanking on a plane, usually in the plane lavatory. Like the Mile High Club but far easier to attain and much more shameful.
Example 1
Guy1:Johnny's been in the bathroom awhile, I bet you he's joining the Mile High Club.

Guy 2: Pfft maybe as a half member!
Johnny: Guess who's now a Mile High Club Half Member!

Guy 1: Called it!

Example 2
Drunk guy:Never have I ever joined the Mile High Club!

*Johnny guy drinks*

Johnny:I'm a Mile High Club half member!
Drunk guy: Ew man gross!
Johnny:Hey dude, it was a long flight and I was bored.
by mrperson123 January 30, 2018
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On a long flight home from a business trip, Jimmy got extremely horny and needed relief. As he didn’t have a willing partner at hand, he went into the bathroom and joined the mile high-five club.

Term coined by: Matthew Ripley Wright
by Vthippiechick May 15, 2022
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ultra-exclusive club for espresso mocha fiends wherein their beautifully benevelont barista's give them a discounted price on there usual drink in order to be rewarded with a generous tip.
or hot hot sex.
is that a tip for now or a tip for later?
by le j. November 9, 2004
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Contrary to popular belief, *this* definition refers to the most difficult, rage-inducing Veteran mission from Call of Duty 4: Modern Warfare. Mile High Club is the epilogue to CoD 4, and attempting to complete it on Veteran is wishing for death's sweet release after only about 5 attempts.
"I've broken 3 controllers trying to beat Mile High Club."
by BiMaruZura November 12, 2022
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1) Highest level of the Mile High Club that one can achieve. To have sex with the pilot in an aircraft at least 1 mile high above the ground. The pilot having sex becomes a Mile High Club Host, and the other individual becomes a Mile High Club VIP (Very Important Passenger).
2) If a Pilot and Co-Pilot have sex, they both become Mile High Club Hosts. If a passenger has sex with a flight attendant, they both become Mile High Club VIPs.
Spencer: Hey George! I heard you took Kacy up for a flight for your date. Did you join the Mile High Club?

George: Yep in fact I’m now a Mile High Club Host and she’s a Mile High Club VIP😏
by WhiskeyTangoFoxtrot69 July 26, 2024
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Mile High Club at the highest level. To have sex 1 mile high in an airplane with the pilot. If achieved, the pilot has now become a Mile High Club Host and the other individual has become a Mile High Club VIP (Very Important Passenger).

3) If the Pilot and Co-Pilot have sex, they are both Mile High Club Hosts. If a passenger has sex with a flight attendant, they both become Mile High Club VIPs.
George: Hey Spencer I heard you took Kacy on a flight for your date! Did you join the Mile High Club?

Spencer: Yep in fact I’m a Mile High Club Host and I made her a Mile High Club VIP😏.
by WhiskeyTangoFoxtrot69 July 26, 2024
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