An adult with a T-Rex hat, it just doesn't get any more ridiculous.  Part of the deciding factor was the look on that model kids face that screams of the photographer telling him to growl like a dinosaur- raaAAAARRRRR!

But seriously, bought it for myself for Halloween.  Hat is actually very good quality considering...  It's fabric and looks just as good, if not better than the pic.  Some of the threads are reflective.  I have a big head (6'3" tall, 210 lbs) and it fit's just fine.  It is also adjustable if you have a smaller head or for a kid.  In a Halloween party of scantily clad french maids/police officers/nurses and guys in lame-joke outfits, this hat really takes the cake.  I also got it since I can conversate and enjoy non-alcoholic beverages easily at said party.