Funniest moment at a convention

Haha, mine was when my buddy, cosplayed as Levi, took a picture with his own yaoi doujinshi... Dat look he had on his face :D

This needs to be a story so bear with me. So, I have worn an FMAB military uniform during the day, with the boots and all. At one point during the day, I had gone back to the hotel to wear something more comfortable. Afterwards, I still wore my blue pants, my military style pants, and a plain black shirt, plus I decided to wear a black fedora (it was a week after my b-day and got it as a present, don't judge). I head back to the con, and it's like 10 PM. I'm sitting outside of one of the panel rooms because two of my friends were there and I wanted to join up with them. These three guys go up to me and ask for a picture. I am just confused, so I'm like "Sure?" The guys are excited and mumbling something about how I look like Batman. I'm still confused, but they get their pics and move on. I tell my friends the story and I still do not understand why they thought black military boots, black shirt, fedora + blue pants = anything Batman. I also have had a guy in a fursuit tell me his life story when all I wanted was a pic and to know "yes or no" if he made the suit himself. And when I put up the pics, he insisted I find him at every con and photograph him. Never saw him again, but cool Lucario suit.

Last con, I had a chance to attend a panel with Sonny Straight (the VA who did Krillin from DBZ, Maes Hughes from both FMA anime, and the Psycho's from Borderlands 2) and during the panel, he left the door open as he was doing his panel. Suddenly, his attention is reverted to the door as a Goku cosplayer walks by, then immediately goes into his Krillin voice and says: "Hey, Goku! Kamehameha b*tch!" I lost it. It was the most hilarious thing I had ever experienced.