Only once? Dude, you haven't lived!!!! XDAs a kid I went to school dressed as Spiderman once.
On a side note, I never dressed up for Halloween. I'd wear something white and have the wind mess up my hair and TADA!!! Instant The Ring girl. Or that little girl from Fear. Yeaaahhh. I miss scaring the poop out of my little gamer nerd. But then he was scared of the Dark Riders too so...wait I need to shut up and get out of here I'm derailing my own thread.