How do you act when you cosplay?

Depends on the event, and I do usually crossplay, so I try to behave as "male" as possible (it's hard to remember to always walk like a guy while in costume!). If I'm at a con and stopped for a photo I'll definitely strike the correct pose. If I'm appearing in something like a parade, I will do my best to stay in character the entire day. However, if anyone speaks to me at a con or elsewhere, I totally drop the character routine (unless the other person wants to act out a little scene or something). I never get into costume or remove it in view of the public. I prefer to maintain the illusion that the character everyone is seeing is "real". You know, like in the Wizard of Oz..."Don't look behind the curtain!"

The definition of cosplay is literally "costume play," so I feel playing the part (on whatever level makes you comfortable) is integral...otherwise you're just walking around in a costume.

I love this tutorial soooo much.

This is the best tutorial I have seen.

You could see the video clearly.

Here are the introdutions:
What The Bat says:
HAHAHAHAHAHAHA
hush little baby dont say a word
mamas gonna kill for you the whole damn world.
And if the world should wonder why, mamas gonna make them cry and cry. All the weirdos and the freaks wont lay a finger on me, cause everyone knows whos my baby HAHAHAHAHAHA Hey baby want me to teach these losers a lesson? Eat your heart out. Hush little baby dont say a word, mamas gonna kill for you the whole damn world. and if the world dont wonder why, mamas gonna make them cry and cry and laugh and laugh. I mean tears of laughter. Oh my God youre funny youre killing me! KISS THIS! Laughter and lies puddin and pie. All the weirdos and freaks cant lay a finger on me. Everyone knows whos my baby. My baby likes me to wear a smile to work. Good thing I like to swing this bat. Does that make me batty? Youre killing me. Am I killing you? Wanna play? HAHAHAHAHAHA (Diagonally in red between the lines):
Hush little baby Mamas gonna kill for you
Youre the whole damn world
Killing me
Youre so funny
No Im
Hush little baby
Killing you
Youre killing me
HAHAHAHAHA bye bye.