I don't have a embarassing moment about myself to share, but rather one that I witnessed while playing a part in the water tank at MGM at the begining of the backlot tour. I agreed to help out, along with a mother and her two teenage sons, who were all to eager, literally jumping at the chance. Me on the other hand, I was a little more subdued. I guess the family just wanted to show off their acting skills to the rest of the people in their party. (Or lack thereof...I'll get to that a minute.)
My role turned out to be the Engineer. When we got out onto the main walkway that acts as the stage, I watched as the family were directed to the boat next to the engine room set. I was told that I was about to get a LOT of water dumped on me, and not to look to my left. I got a laugh out of the crowd and the Cast Members as I hung my head and moaned.
After I was soaked from the water, I got to watch the family act out their parts. As the Captain and Seamen on the deck cleaning. They were supposed to react to an imag. plane and scream and be overly terrified. Now, I've seen some HORRIBLE acting in my day (I own and wrestle for a local independent wrestling federation here in town) BUT OMG!!!! These people were awful! Not embarassing for me, or maybe so much in general, but oh man! That is the one thing I have nightmares about late at night!
I know they were SUPPOSED to be having fun, but they mostly just stood there, looking like a poster family for Dumb and Dumber. They just kind of stared at the water as the special effects were triggered. I was trying hard not to laugh at the horrible display, and the Cast Member who was playing host on this rotation was doing her best to get them motivated, but alas, they stood there like deer in headlights.
Afterwords, I got to talk to the Cast Members for a few seconds about the family after they had ventured on to join their group and I've never seen a small group of people laugh as hard as we did for about a minute. They said that was one of the worse examples of stage fright they had ever seen. And then I was on my way to let them do their jobs after a big thanks for my good humor.
Don't know if that story counts, but why not share it while laughing about dive-bombing Seagulls? (crazy rats with wings...yuck)