I usually hang up Halloween decorations,
but this year I'm gonna be the decoration.
Being the Halloween Decoration
Explanation
Explain Bear
Listen here, you smooth-brain. The joke is that instead of putting up Halloween decorations, this person will BE the decoration. Like, they will dress up or something. You wouldn't get it, you probably still trick-or-treat, don't you?
Wade
Oh shit
Anonymous
Don't commit suicide you sexy