This Is My Halloween Costume T-Shirt. Halloween is almost here! This Is My Halloween Costume T-Shirt. Exclusively from Gone Blue.com, these new tee’s feature hard-core sayings that say it all. From “Trust Me I'm A Doctor” to “Thats Mr. Asshole To You”. How about a t-shirt that says “I Scored High On My Drug Test” Our short sleeve t-shirts are made from a 100% fully machine washable cotton/poly blend for a cool and comfortable fit every time. On the front of this shirt it says "This Is My Halloween Costume"