Is there a sexual experience that you had always thought would be great, but when you tried it... it simply didn't live up to expectations? Or maybe even outright sucked?

Sex on an airplane. I was on an over night flight to Italy. The girl next to me had struck up a conversation from the beginning. After a few of them free first class drinks we started getting touchy feeling and then we made our way to the bathroom... between flushing the toilet with out knees a few times to having your body wedges between the tight walls, we finally finished. I went out first so she could have time to straighten herself up. Sure enough we kept getting looks the rest of the flight.  
Good news is when we got off the plane we got a taxi and headed off to my hotel so we could properly take care of business.

Super hot

the flight crew hits air turbulence and then not so much. The only guarantee you will have is that everyone will know what was occurring and one or both of you will potential be injured.  

Agree Zen the beach sounds good until you realize there is sand everywhere. Pool in a condo while on vacation can be a little nerve racking until you get into it. Getting a bj while driving so long as you don't need to make any turns.

...it's actually dangerous.

especially if you're on the bottom ...
still beats sand

In moderation, syrups and the like are tolerable.

So wrong and so bad for soooo many reasons!

Guy went gonzo on putting too much on me and it got into places that I NEVER want to feel sticky in!

...yep. Rubbed raw. Skin infection followed. Very dangerous.
Uh...to graphic?

Was 18 and took my new girlfriend to my Mum's country property. It was early in the morning and we were in a small 3 man tent. I was on top in mish, when my Mum's male dalmatian decided to join in and mounted me from behind. The girlfriend was screaming, the dog dug his teeth in my shoulder and was trying to peg me. And I still wanted to finish.  
I finished, dog finished and backed out.  
For years I couldn't play in a tent without that coming to mind.  

That takes the cake to all the rest. BEST EVER

Erica Jong...  

Ok I went in a different direction (pun intended) from your question.

using a yoga mat to soften the tub.

Lopaw as a women, what are the benefits of the mile high club?  Also how are your experiences similar and different from a man's initiation into the same club?

That's when I discovered that I am much more of a voyeur than an exhibitionist. Watching people get it on was very very hot- being watched and pawed at by random strangers- ehhhh not so much! :-/ It was just distracting and made it impossible for me to achieve orgasm. Went back our hotel and had WAY more fun in private!

That pretty much tells you all you need to know about male sexuality - we may be getting pegged by a dalmation, but we want to soldier on to the finish. . .

Still remember my first shower sex- very awkward, what should have been slippery wasn't, what shouldn't have been slippery was (hard to get a grip on the walls/ground)
Now I know enough that in the presence of water, lube is definitely a prerequisite.

...is challenging but can be awesome with a couple of precautions. First, a blanket. Second, in the water beyond the breakers. Beautiful stuff

I know, it's supposed to be the Great Taboo and I've tried to get on board, but it hasn't worked out so well...so far.

That is actually a fetish I am really into. I love food play. I love having food sucked and liked off of me and I really love eating food off of a lady. If you take proper preparation like using tarps over a plastic camp air mattress on a wood, tile or concrete floor, clean up is easy and for getting it off the body a parter is handy and makes it fun too. Dawn dish soap is best for greasy foods.

You are a humanitarian.  I bow before your wisdom.  I owe you drinks...  many, many high quality libations.  

I'm not sure what (if any) benefits there are of a Mile High Club experience other than the experience itself. I never have been (nor intend to) "officially" belong to a Mile High Club. It was one of those spontaneous bucket list type of experiences, and I doubt that it would ever happen again.  

and loved it.  I forget what ingredients were in it, but after four of them, I was pretty well plastered.  Sand?  What sand?

everything it should have been ...  
made the mistake of having a few glasses of great wine at the social aspect before the physical part of the day. My dick decided to take the night off for the main event.  

69 would be fabulous. Well, at least for me, this position makes it very difficult to concentrate on either the pleasure I am receiving or the pleasure I am trying to give. I find that I last longer this way but the overall feeling is not as good.  

I agree completely! Kinda difficult to concentrate on what I'm feeling and even more difficult to concentrate on what I' doing. I can rub my tummy and pat my head, but oral should feel better than that!

There's a company in Vegas that will help people cross the mile high club off their bucket list.  They'll fly you and your partner over Vegas while you join the club.

The proper way to 69 is to be pleasured WHILE ALSO being smothered by pussy.  If it's her turn, being pleasured while being smothered by cock.  You're EITHER giving or receiving, using more of your body.

my room.

I always thought the fantasy of making love to two ladies during the same session would be fun. When I tried it, one lady just sat there doing nothing. Just like you and sand, never again.  

Especially at doubles rates.

It can be fun with the right gals, but the cost should be a lot less if each is sitting out the other's turn.

beach blankets should be really, really big. The other thing is moving from the dry sand to the wet sand, right where the waves come in (if you can time it for just as the tide is heading out it good) -- it doesn't blow around with the breeze. Also CG helps a bit.