["All day at work my coworkers would laugh when I'd pass by. I had no idea what was going on until I got home and noticed I had a giant candy stuck in the back of my hair!"]
Oh no!  They are mean to not have told you.  I would've told you.  How did it even get there?
I went to work today and noticed that my coworkers would laugh every so often. I had no idea why until I returned home and noticed that I had a giant candy stuck in the back of my hair all day!