Best conference story goes to Lady Arite gune Akasa, for her Dragon*Con costume stories!
"I wear a Cortana costume at Dragon*Con and have gotten some interesting attention with it. I've been called everything from Blue Lady to Mystique to Lady of the Blue Lagoon to Na'vi to Tron. People seriously grasp at straws rather than just ask what you are.
My costume is a painted bodysuit, wig, makeup, and blue contacts. Once, a group of what, under normal circumstances, I would have assumed to be typical sorority girls came on the elevator with us. One rather brazen girl asked "Are you wearing a bra?" Her friends expressed shock and said you can't just ask people that! But it's a con, if you can't be weird and open, what can you be? I told her I was wearing nipple covers, but that only piqued her curiosity and she asked about underwear too. "Yes." "I can't see it!" "It's seamless microfiber so you can't see the lines under the body suit." Her friends were still chastising her and giggling when they stepped off.
A guy said something to me once- I couldn't hear, I assumed it was the usual "Can I take a picture with you?", so I said sure and found myself being swept off my feet and held in his arms. Oh. Okay...well I feel slightly awkward now, but I can laugh it off. Aaand my fiance is laughing at me now. His friend had gotten himself distracted by another costume and it took a while to get his attention, so I was in this random guy's arms for a couple minutes before he realized he was being asked to take pictures.
A drunk girl toddled up to me once and said "Can I have your picture? I need to take your picture 'cause you're really hot." I obliged and she said "Thank you, you're really hot." and toddled off.
Then there was the other drunk lady who wanted specific poses (standing back to back, facing away from the camera w/ arms over each others shoulder and looking back at the camera). One of the more unusual requests I've gotten, but I figured it was harmless. However, my friend and fiance were laughing heartily the entire time and I had no idea why. It was more laughter than warranted by mild amusement at the drunk lady. Turns out she had her tongue out in the most horrible porn star faces the entire time. One friend declared them blackmail pictures. I promptly posted them on the internet to thwart his plans. We saw her again the next day (still drunk). She complemented my outfit but obviously did not remember the day before."
Also worthy of note was the RWA flagpole rapper - apparently, a guy climbed one of the flagpoles and stopped traffic for a while as the police were trying to get him down. Turns out he was a rapper, trying to advertise his songs!
Any more con hijinks? I'd love to hear your stories!