This is sometimes confussing, especially when the person or character they are dressing as has hermaferdiac traits..
Then again, some crossplayers are so good at what they do that they seem to be the same gender as the character they are cosplaying as.
"One year I went to Otakon crossplayed as Sango."
"That one crossplayer for Fuuma was was so good that I didn't know it was a girl till she wen't in the girl's bathroom"
#2 playing a video game character of opposite sex while same sex is available
#2 playing tomb raider as a male isn't realy crossplaying, but if the same male is using a female character in an online game...
It is very hard to find a "good" crossplay. At best estimate, 4 in seven crossplays are hideous, to the rate of one in eight good cosplays.
Do not attempt this under any circumstances unless 1) you can make or have access to good costumes, 2) you are absolutely sure you will look good or just okay in it, and 3) you're sure that you will be going to a convention with so many freaks that nobody will mind.
2. Two "normal" people in jeans and t-shirts walk through a convention.
Person 1: Wow, this is an awesome convention huh?
Person 2: Damn right!
crossplayer walks by...
Person 1: Oh my God... was that a guy in crossplay?
Person 2: Yeah... that's one of those people who should definitely not wear tights.