I may be one of these.  Guess which one !

#1.)  The Person Who Claims They're Wearing a Costume, Even Though They're Not.  They'll be in normal clothes, but when you ask why they didn't dress up, they'll say they DID.  Then they'll claim they're dressed as something that doesn't REQUIRE a costume . . . like a serial killer or a teacher. 

#2.)  The Person with a Costume That Severely Restricts Them from Moving Around.  It might be something like a mermaid tail, so they can't walk right.  Or it might be a costume that's so huge and ridiculous, they can't fit through a doorway.

#3.)  The Person Who Obviously Hates Halloween.  If they're dressed up at all, it'll either be a cheap costume, or the same costume they wore last year.  And they'll probably be sitting in a corner looking miserable.

#4.)  The Guy Dressed in Drag.  For whatever reason, some guys LOVE dressing as women on Halloween.  And they always act like it's the funniest costume anyone's ever seen.

#5.)  The Person Who Handmade Every Single Thing They're Wearing.  They'll also be way too proud.  And at least once, you'll overhear them bragging about how much time they wasted on it.

#6.)  The Person Who Approaches Halloween Like a Method Actor.  If they're dressed as, say, Marilyn Monroe, then they'll ACT like Marilyn Monroe ALL NIGHT . . . to the point where you won't even want to talk to them, because it's too annoying. 

(The Frisky)